No matter which engine I have used, I have found that you often need to generate a number of images to get something you like. And sometimes it will just plain ignore what you write. even if you are very specific.
1: It depends. The engines seems to prefer the person just standing there. And...
I usually use Lexica.art/aperture (you can see a lot of what I have done earlier in this thread)
Sadly it has not been working properly with the latest version during January. I pay to be able to render 1000 images a month. You can't save a chaacter and reuse in that one though.
Now that I...