Heads up on the dithering, I think you did fairly well for dithering especially using different hues, I admire people's ability to do that. (Because I suck at it.) I agree with Blick, the scratch lines look a little odd. His arms also look a little odd, I know how the arm does that kind of .. flab coming over the edge thing but it seems a bit too much/too deep. I really really don't know how to explain that very well. Sorry.
His head is a little straight, but I like it. The blood could look alot better.