One of the issues with AI art is they are kinda like idiot savants right now. Even the best can go down rabbit holes of crazy if you aren’t careful. And some do better at some things and worse at others. The key to getting good results from the various AI art generators is practice. Throw out some prompts and run a few generations to see what you get. If you don’t like it, modify your prompts and try again. There is a learning curve every time you try out a new model as well. Some are really good at showing emotions, some don’t emote at all. Find one with a style you like, and give it a go. You never know what you’ll get. For my uses, I create pictures of the characters in my stories so I can use them as references. It works really good for that.