I'm really diggin your work here! Some small things I would suggest would be to work on your anatomy, you can get books from the library and study them, I get you aren't going for realistic, but more like an anime style. Or you can always look at yourself in the mirror doing different poses, I make my husband pose for me XD I wanna say this but I don't want it to come off rude, so please don't take it that way. You tend to get a bit "blocky" And what I mean is you lines are a bit to stiff you should work on softening them up. Other than that you're doing GREAT :3