How to write a good AI image prompt
Learn a simple prompt formula for AI images: subject, context, style, composition, lighting, and what to avoid.
Quick answer: A good AI image prompt clearly describes what should be in the image, how it should look, how it should be framed, and what should be avoided.
The simple version
Think like a photographer or art director. Tell the tool the subject, setting, angle, lighting, mood, and style instead of one vague noun.
Use a simple formula
Start with: subject + action + setting + style + composition + lighting + constraints. You can make it shorter once you know what matters most for the shot.
Make a robot image.
Friendly robot in a workshop, wide shot, soft lighting, teal palette, no readable text.
Be specific, not crowded
One clear scene usually beats a long list of unrelated details.
- Name the subject and action.
- Set the setting and camera angle.
- Choose style and lighting.
- Add one or two constraints.
- Generate a few options and compare.
A real example
Rewrite “make a robot image” into a prompt with subject, setting, camera angle, color palette, and mood.
Example prompt: “Rewrite this weak image prompt with subject, setting, angle, style, lighting, mood, and one constraint: [prompt].”What to be careful with
If the tool supports negative guidance, mention common problems to avoid—extra fingers, distorted faces, readable text, logos—but do not overload the prompt.
- Subject and action clear.
- Setting and angle named.
- Style and lighting chosen.
- Constraints added.
- Compare a few outputs.
A common mistake is making prompts longer without making the visual decision clearer.
Rewrite one vague image prompt using subject, setting, angle, palette, and mood.
Try prompt: “Improve this image prompt for clarity without adding unrelated details: [prompt].”One thing to remember
Better image prompts are not longer by default; they are clearer about the visual decision you want the AI to make.
Tools to try for this lesson
Optional tools for practicing this AI Images & Video lesson. Use them to generate drafts, compare outputs, and browse the full Neural Nexus index for more options.
- Adobe FireflyGood for testing clear subject + style + composition prompts.
- CanvaHelpful for combining AI concepts with readable layout and text.
- ChatGPTUseful for rewriting weak visual prompts into clearer briefs.