It looks really good and you did great! the only thing thats putting me off a bit is the "adams apple" it looks like its gloo'd on. I think if you just did a smoother pass from the darks to the light instead of the sharp edges it would have blended better and read as "round" rather then how it turned out to be.
Anyway over all really good job Great work! I hope you dont what i said
Anyway over all really good job