I’m new to SD. Not exactly my forte (art or AI), but I’m having fun playing with it. I had an idea the other day, I think SD is the solution, but I don’t know how to do it.

I wanted to try putting my son into a pic. He’s into space right now and I’d love to make some art of him as an astronaut. Something better than a cut and paste of his head onto an astronaut cutout. How do I do that with SD? I can’t figure it out.