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2026-08-141 min readEnglishAI prompt guideprompt engineeringAI image generation

AI Image Generation Prompt Guide (2026): Write Prompts That Actually Work

A practical prompt writing guide for AI image generation: structure, keywords, common mistakes, and a reusable framework for consistent results.

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The prompt framework

Every effective prompt follows this structure:

[Subject] + [Composition] + [Style] + [Lighting] + [Constraints]

Example: "Ceramic coffee dripper on wooden counter, product centered, soft morning side light, warm earth tones, clean negative space for headline, editorial product photography"

The three parts that matter

1. Subject: What are you generating? Be specific ("artisan ceramic dripper" not "coffee thing") 2. Composition: How is it arranged? ("centered", "rule of thirds", "negative space for text") 3. Style: What aesthetic? ("editorial photography", "flat illustration", "cinematic")

Common mistakes

| Mistake | Fix | |---------|-----| | Too many adjectives | Use 2-3 specific style words | | No composition direction | Add "centered", "left-aligned", "negative space" | | Vague lighting | Say "softbox", "golden hour", "dramatic side light" | | Asking for text | Generate background first, add text on canvas | | Too many references | Use 1-3 focused references |

Prompt patterns by use case

Product photography: "[product] on [surface], [lighting], [angle], clean background"

Social media: "[background description], [mood], [color palette], [aspect ratio]"

Campaign hero: "[subject] in [setting], [composition], [lighting], [brand colors]"

FAQ

Q: Should I use negative prompts? A: Yes when available. Use them to remove artifacts ("no blurry text, no extra fingers").

Q: How many variations should I generate? A: 8-12 to see patterns. Pick 2-3 winners to refine.

Q: Can prompts guarantee consistency? A: Use the same constraints + references + a stable tool (Vibart: 94/100 consistency).