You describe a scene, the picture arrives, and it is nearly there. The face is right and the setting is right, but the outfit is wrong or the light is too harsh. The temptation is to rewrite the whole description and try again. That usually loses the parts you liked.
Keep what works
Start from the description that produced the nearly right picture. Copy it exactly and leave every part that worked untouched. That description is the closest you have come, so treat it as your base.
Change a single detail
Pick the one thing that is wrong and change only that. If the outfit is wrong, describe the outfit differently and leave the light and setting alone. If the light is too harsh, soften the light and nothing else.
See what moved
Compare the new picture with the last. Because only one thing changed, you can tell whether that change helped. When several things change at once, you cannot tell which edit fixed the picture and which one made it worse.
Then move to the next detail
Once the first fix is right, keep it and turn to the next thing you want to improve. Working through the picture one step at a time feels slower, but it nearly always reaches the result sooner than starting over.
Save the descriptions that work
When you land on a description that gives you exactly the look you wanted, keep a copy. It becomes a starting point for future pictures, so each new set begins from something you already know works.