I'm surpriesd that you changed the leg from the way it was in the first wip picture. It's nothing wrong with sitting the way he does now, but he's slightly off balance. You should probably tilt his upper body a bit forward.
Also, there's not really any clear shadows here, just semi pillow-shading. I see you have a lightsourse from the top(slightly right side), you should make some shadows to indicate that further. And on a side note, you have to make up your mind if you want to use black outlines or not, as the blade looks out of place compared to the rest of the character and visa-versa.
