GuideReferencebeginner12 min read

AI Image Prompt Writing Guide: From Idea to Perfect Image

Write prompts that produce the images you actually want from Midjourney, DALL-E, and Stable Diffusion

Why Image Prompts Are Different

Text-based AI reads your prompt like a conversation. Image generation AI reads it like a recipe. Every word is an ingredient, and the order you list them changes the dish.

When you prompt ChatGPT, you can be wordy. You can explain context, add caveats, and use natural language. Image generators work differently. They parse your words into visual concepts and weight them by position. Words at the start of your prompt carry more influence than words at the end.

This means the skills that make you good at text prompting — providing context, explaining nuance, writing full sentences — can actually work against you with image AI. Image prompts reward specificity, visual vocabulary, and deliberate structure.

Insight

Image AI does not understand “make it look professional.” It understands “clean white background, soft studio lighting, centered composition, 85mm lens.” Your job is to translate feelings into visual descriptions.

The Image Prompt Formula

Every effective image prompt follows a similar structure. You do not need every element every time, but knowing the full formula helps you decide what to include and what to leave out.

1

Subject

What is in the image. Be specific about the main subject, their pose, expression, or state.
2

Style

The artistic or photographic style: watercolor, cinematic photography, vector illustration, oil painting.
3

Composition

How the shot is framed: close-up, wide angle, bird’s eye view, rule of thirds, centered.
4

Lighting

The light source and quality: golden hour, studio lighting, neon glow, soft diffused, dramatic shadows.
5

Details

Mood, color palette, texture, background elements, and atmosphere that complete the scene.
6

Technical Parameters

Aspect ratio, quality settings, and platform-specific flags like --ar 16:9, --v 6, or --stylize 750.

Here is what a complete prompt looks like when you put all six elements together:

Complete Image Prompt
A golden retriever puppy sitting on a weathered wooden porch, looking directly at the camera with tilted head, soft watercolor painting style, warm autumn color palette, close-up shot with shallow depth of field, golden hour side lighting casting long shadows, fallen maple leaves scattered around, cozy nostalgic atmosphere --ar 4:5 --v 6 --stylize 500

Pro Tip

You do not need to write prompts as full sentences. Comma-separated descriptive phrases work better for most image generators. Save your sentence-writing skills for text AI.

Subject and Scene

The subject is the most important part of your prompt. Put it first. Be specific about what you want to see — not what you want to feel or communicate. Image AI generates pixels, not concepts.

The difference between a vague and specific subject is the difference between “a dog” and “a golden retriever puppy sitting on a wooden porch, looking at the camera.” One gives the AI room to guess. The other tells it exactly what to render.

Subject Examples by Type
Portrait subject:
A woman in her 30s with short curly hair, wearing a linen blazer, leaning against a brick wall with arms crossed, confident half-smile

Landscape subject:
A narrow cobblestone street in a Mediterranean village, terracotta rooftops, hanging laundry between buildings, a single orange tree in the foreground

Product subject:
A matte black ceramic coffee mug on a marble countertop, steam rising from the cup, a folded newspaper beside it, morning light from a window

Pro Tip

Describe what is in the image, not what you want the viewer to think. Instead of “a powerful leader,” describe the visual: “a person standing at a podium, spotlight from above, audience silhouettes in the background.”

Style Keywords That Work

Style keywords tell the AI what the image should look like — the artistic medium, the visual treatment, the overall aesthetic. These are the words that have the biggest impact on the “feel” of your output.

CategoryKeywordsBest For
Art Styleswatercolor, oil painting, digital art, pencil sketch, vector illustration, isometricCreative projects, editorial, branding
Photographyportrait photography, macro, aerial, street photography, product photography, documentaryRealistic images, marketing, social media
Aestheticcinematic, ethereal, minimalist, vintage, cyberpunk, art nouveau, brutalistMood-driven work, concept art, hero images
Renderingphotorealistic, 3D render, low poly, pixel art, claymation, paper cutoutTechnical illustration, gaming, stylized content
  • Editorial portrait: “cinematic portrait photography, soft studio lighting, shallow depth of field, muted earth tones”
  • Tech product shot: “clean product photography, white background, soft shadows, minimalist, high-key lighting”
  • Fantasy illustration: “digital painting, ethereal atmosphere, volumetric lighting, rich saturated colors, art nouveau borders”
  • Vintage poster: “retro travel poster style, limited color palette, bold typography, screen print texture, 1960s aesthetic”
  • Social media graphic: “flat vector illustration, bright gradient background, geometric shapes, modern minimalist”

Composition and Camera

Composition keywords control how the scene is framed. They tell the AI where to place the subject, what angle to shoot from, and how much of the scene to show. These terms come from photography and cinematography, and image AI understands them well.

Think of it this way: the subject is what the camera is pointed at, and composition is where the camera is standing.

TermWhat It DoesWhen to Use
close-upFills the frame with the subject, shows fine detailPortraits, product details, textures
wide shotShows the subject in their environmentLandscapes, establishing shots, architecture
bird’s eye viewLooking straight down from aboveFlat lays, maps, overhead food photography
low angleLooking up at the subject, makes things feel imposingArchitecture, dramatic portraits, heroic poses
85mm portrait lensFlattering compression, creamy bokeh backgroundHeadshots, character portraits
35mm lensNatural field of view, slight wide angleStreet photography, environmental portraits
Composition Changes Everything
Same subject, different composition:

Close-up: A weathered fisherman's hands mending a net, extreme close-up, shallow depth of field, natural light, documentary photography

Wide shot: A fisherman mending his net on a wooden dock at dawn, wide establishing shot, fishing boats in the background, morning mist over the water, 35mm lens

Bird's eye: A fisherman's net spread out on a wooden dock, overhead flat lay perspective, geometric rope patterns, morning shadows stretching across the planks

Platform-Specific Tips

Each image generator has its own strengths and quirks. A prompt that works perfectly in Midjourney might need adjustments for DALL-E. Here is what to know about each platform.

FeatureMidjourneyDALL-E 3Stable DiffusionFlux / Leonardo
Prompt LengthShort to medium, keyword-focusedLong, natural language preferredMedium, supports positive and negative promptsMedium, natural language works well
Best AtAesthetic quality, artistic styles, vibesComplex scenes, text in images, instruction followingFine control, inpainting, custom modelsPhotorealism, prompt adherence, fast iteration
Key Parameters--ar, --v, --stylize, --chaos, --weirdSize selection in UI, natural language controlCFG scale, steps, sampler, negative promptGuidance scale, aspect ratio, style presets
Artist ReferencesVery responsive, strong style influenceLimited, focuses on style descriptions insteadSupported, depends on model trainingModerate, style descriptions preferred

Pro Tip

Midjourney responds well to artist and photographer name references for style. DALL-E handles complex multi-element scenes better than most alternatives. Use each tool for what it does best.

Before & After

See the difference between a vague image prompt and one that uses the full formula. The specific prompt gives the AI clear instructions for every visual element.

Before
a sunset over mountains
After
A dramatic sunset over the Dolomites mountain range, jagged peaks silhouetted against a sky of deep orange and magenta, thin clouds catching the last light, alpine meadow with wildflowers in the foreground, cinematic landscape photography, wide angle 24mm lens, golden hour lighting, rich saturated colors, sense of vast scale and solitude --ar 16:9 --v 6 --stylize 750

Success

The first prompt could produce any sunset over any mountains. The second prompt describes a specific image. Specificity is not about writing more — it is about writing the right visual details.

Common Prompt Patterns

Here are ready-to-adapt templates for the most common image generation tasks. Replace the bracketed content with your specifics.

Social Media Product Graphic
[Product/brand item] centered on [surface material], [background style], clean product photography, soft studio lighting, slight reflection on surface, minimalist composition, high-key lighting, commercial quality --ar 1:1
Blog Header Image
Abstract [theme/concept] illustration, [color palette] color scheme, flowing organic shapes, subtle gradient background, modern editorial style, clean negative space for text overlay, wide format --ar 16:9
Product Mockup
[Product type] floating at slight angle on [background color] background, soft drop shadow, 3D product render, studio lighting from top-left, photorealistic materials, [material finish] surface, commercial mockup quality --ar 4:5
Portrait Photography
[Subject description], [age/appearance details], [expression/pose], portrait photography, 85mm lens f/1.8, [lighting type], [background description], shallow depth of field, natural skin texture --ar 4:5
Abstract Background
Abstract [concept] visualization, [color 1] and [color 2] palette, smooth gradient transitions, flowing liquid forms, subtle particle effects, dark background, modern digital art, high contrast, 4K detail --ar 16:9

Common Mistakes

These are the pitfalls that trip up most people when writing image prompts. Avoiding them will save you time and credits.

Stacking competing styles

“Watercolor oil painting digital art photorealistic” confuses the model. Pick one primary style and one modifier at most. “Watercolor with ink outlines” works. Four styles at once does not.

Contradictory descriptions

“Bright sunny scene with dramatic moody shadows” pulls the AI in two directions. Decide on a mood and describe lighting that supports it. Consistency produces better results.

Ignoring aspect ratio

Default square images rarely match your actual use case. Set the aspect ratio for your target platform: 16:9 for headers, 4:5 for Instagram, 9:16 for stories, 1:1 for profile images.

Prompt too long

After about 60-75 words, most image generators start losing track of early details. Front-load the important elements. If your prompt is a paragraph, the last sentence probably gets ignored.

Not iterating

Your first prompt is a starting point, not a final draft. Professional AI artists generate dozens of variations, adjusting one element at a time. Change the lighting, swap the style, try a different composition. Treat each generation as a data point, not a finished product.

Quick Reference Cheatsheet

A fast-reference table for common image generation tasks. Find your use case, grab the recommended style and parameters, and adapt the example.

Use CaseStyleKey ParametersExample Snippet
Blog headerAbstract / editorial illustration--ar 16:9, negative space for textabstract flowing shapes, gradient blue to purple, clean negative space right side
Instagram postProduct / lifestyle photography--ar 4:5, bright lightingflat lay, marble surface, natural light from left, minimalist arrangement
LinkedIn bannerProfessional / clean minimal--ar 4:1, subtle backgroundabstract geometric pattern, corporate blue palette, soft gradient, professional
App icon3D render / flat vector--ar 1:1, centered subject3D icon, rounded corners, single object centered, soft gradient background
Hero imageCinematic / photorealistic--ar 16:9, --stylize highcinematic wide shot, dramatic lighting, shallow depth of field, film grain
Image Prompt Template
Universal Template - Copy and Customize:

[Subject description with specific details], [art style or photography type], [composition/framing], [lighting description], [color palette or mood], [background details], [technical quality keywords] --ar [ratio] --v 6 --stylize [100-1000]

Next Steps

Writing image prompts is a visual skill that improves with practice. The formula and patterns in this guide give you a strong starting point, but the real learning happens when you start generating and iterating.

If you find yourself staring at a blank prompt field and struggling to describe what you want, that is where AskSmarter.ai helps. Our prompt builder asks you targeted questions about your image — subject, style, mood, composition — and assembles a structured prompt from your answers.

Build image prompts the structured way

Answer a few questions about what you want to create. AskSmarter turns your answers into a detailed, well-structured prompt ready for any image generator. No visual vocabulary memorization required.

Start building free