Prompt anatomy: four layers

A formula that works

A reliable prompt describes four things: subject, style, composition, and light and mood. Omitting any layer means the model chooses it — and usually not the way you need.

[SUBJECT] a middle-aged woman astronaut, a tired smile
[STYLE]   1960s retro poster, grainy print, limited palette
[COMPOSITION] waist-up portrait, looking at camera, subject on the
              right, empty space on the left for text
[LIGHT AND MOOD] warm side light, an air of restrained optimism

Order matters

The closer a word is to the beginning, the more it influences the result. Start with the main subject rather than the style: a prompt opening with "photorealistic, 8k, cinematic" often produces a beautiful picture of the wrong thing.

Specifics instead of adjectives

"A beautiful sunset" is an empty description — the model has its own idea of beautiful. "Low sun, long shadows, orange-to-violet gradient, silhouettes in the foreground" is a description you can draw.

The rule is simple: if an adjective can be replaced by something visible in the frame, replace it.

Length

A long prompt isn't a good prompt. Past a certain volume the model starts losing some of your instructions, and there's no predicting which. Twenty precise words beat eighty where half are synonyms for quality: "masterpiece, high resolution, stunning, professional".

When there are many elements

Models assemble complex multi-object scenes badly: they muddle what's where and lose items. It's easier to generate a simple scene and finish it in an editor than to force a complex composition through the prompt.

Insight. Start the prompt with the subject, not the style. A prompt opening with "photorealistic, 8k, cinematic" yields a beautiful picture of the wrong thing.

Common mistake. Padding a prompt with synonyms for quality. Past a certain volume the model drops some instructions, and you won't know which.

Pro tip. Replace adjectives with what's visible in frame. "A beautiful sunset" is empty; "low sun, long shadows, silhouettes" is something that can be drawn.

Cheat sheet

Four layers: subject, style, composition, light and mood.
The main thing goes at the start.
Replace adjectives with the visible.
Complex scenes are easier assembled in an editor.

1. What should a prompt start with?

2. What do you do with the adjective "beautiful"?

3. What's wrong with a very long prompt?

Task — checked by AI

Build a four-layer prompt for a real task of yours. Then make three versions: (1) complete; (2) without the composition layer; (3) without the light and mood layer. Generate all three. Separately, in the complete version replace every evaluative adjective with a description of the visible and generate again. Paste the prompts, describe what changed when each layer was missing, and what the adjective replacement produced.

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