John Egbert Pixel-over

All right so I wanted to try my hand and this is the first time I've ever done a pixel-over, and wa-la, here it is! I think it turned out pretty good for my first try. I want to do others but I have class soon, so of course I can't just sit in my room making pixel art! Anyway, tell me what you think and if you have any suggestions on how I learn... to... do... pixel art? I'd love to hear it.