Prompt fundamentals
Improve a prompt by changing one variable
Use a small revision log to learn what actually changed the image.
What you’ll make
Run a controlled three-version exercise instead of repeatedly rewriting the whole prompt.
Step by step
- Save your first prompt and result. Describe the problem in observable language: “the subject blends into the background” is more useful than “it is not good enough.” Choose one problem for this exercise.
- Create version two with a single targeted change. To improve separation, change the background brightness or color while keeping the subject and camera description fixed. Keep the same model and settings where possible.
- Create version three by refining the same variable. If your selected workflow exposes a seed, reusing it may make comparison more useful, though results can still vary with the model and settings. Do not assume a seed guarantees an identical composition.
- Put the three results side by side. Write the prompt change and the observed effect under each. Keep the strongest version, then start a new exercise for the next problem.
Example prompt
Revision note: Keep the person, pose, framing, and soft side light from the previous brief. Change only the background to a simple deep blue wall so the pale coat is clearly separated from it.
Review your result
Did the change solve the named problem? Also check for regressions: better contrast is not a win if the pose or face became less useful.
If the first attempt misses
If too many things shift between attempts, shorten the brief and use a reference-capable workflow for the important visual anchors. Judge several attempts before attributing every difference to one phrase.
Your next exercise
Keep a three-row log with columns for change, effect, and decision. End with a sentence explaining why you selected the final image.