Lovely shading. I love the mix of cel style on the skin and shirt and softer shading in the hair. Both really stand out that way, especially when put together like you did here. The color scheme is nice, too, and the background colors in particular work well with it. The anatomy of the face looks slightly off, I think the nose is too big and the curve of his jawline going inwards as it does looks slightly awkward. Other than that, though, it's very nice work.
Unique! Different! and Really Nicely done! Shirley