His hands look messed up. Especially his left one, if you were to bend your hand like that, that wouldn't be an arm bend, you hand naturally rests like that. The thumb would be on the inside (closer to the body). Also, try making his right arm more skeletal. It would fit the theme of the hand a lot better. The right foot is way to small, and the thingy around his waist and legs is very confusing? What is it? But I do like the angle that he is coming at, and hisright wing is awesome. His neck is almost perfectly done, but I would put trails of flowing wavy hair coming off his head. I see a lot of potential in this and in you. And your other stuff is awesome. Your great at drawing things from a reference, and your shading is great.