Well, this prompt is incredibly easy since I make mistakes all the time. I've been playing around with reversing my 35mm lens for macro shots since my zoom lens is broken. I love the detail you can get but you've got to be really up close to your subject.
My daughter let me practice and was a good sport about me shoving my lens practically in her eye. My intention going in was to get the detail of her eye. I had a heck of a time getting focus on her eye but no trouble getting me in focus. I think it's a neat shot anyway.
I don't have much Photoshop experience but I try little by little to do new things with it. It's overwhelming all the things you can do with it. This is a double exposure of a shot of her eyelashes with the same shot as above...lots of mistakes made trying to do that too. It's always fun trying new things in different ways.