the face and ear size is a whole lot better in the new one :] I would advice for more strand definition in his hair, and I love the moustache xD The shading is interesting too, and also a step up; the new one as a whole flows better and isn't blocky like the original.

If you care to try a third, I would suggest more dynamic line thicknesses, in dark areas make your lines thicker, in lighter ones, thinner etc, and refine his nose a bit, give him a nostril maybe >:]