Not bad. I'd start off with sigs though...just so everything's all big, ya know, you're not working crammed into an 80x80 square. Just makes it a little easier, maybe it's just a mental thing. But for a first with Photoshop that's pretty good...it looks like you know what you're doing with brushes and cropping players so keep trying and post your work along the way.
And if you're looking for any specific help you can PM any graphics geniuses here or post your questions. Good luck man.