I’m a fractal artist. I use GIMP and ChaosPro and I’d love to help out a developer with some art. I won’t charge you because I love making the art and my time isn’t really that valuable. Maybe you’d like a background for a loading screen or perhaps an image that comes up when a player completes a level? I’d really love to help, so don’t hesitate to contact me at firstname.lastname@example.org
I’m also happy to try and help you out with the two programs I mentioned if you’re keen to try them out.