My tip is don't compromise your main focal point.
You want to be able to convey what your sig represents.
If you have a bunch of crap all over it,then no one will know what it is.
Like a few others said, if you want to get into working with PS you gotta check some
tutorials out. They will help you a lot. The more you read and practice, the quicker you'll realize how much you've improved. I'm sure the Gfx team would be more than happy to hook you up with some beginner tutorials. Good luck.