It's hard to find art with coloring this good, props for doing an amazing job on that. The arms coming out of the back thing doesn't really bother me, its heavily stylized after all. I think you should worry more about the eyes. The way they're tilted towards each other makes him look like he's got some sort of fish-eye thing going on. Try covering one of his eyes and re-imagine it as being parallel to the other one to see what I mean. Overall, it's really good.