[unaindz]

I don't have much experience with GPT but with image generation.

You need some amount of experimentation to get the best results but in my experience what works for one model does nothing or worsens the output in others. Adding loras and different types of images into the equation makes this so variable that I would never consider it useful besides keeping a few key words I used to get x good result on y model and experimenting with those when I start a new project.

Calling it "prompt engineering" seems odd.