The head is very well done.
I like the way you shaded the hair.
The only thing I dislike is the bottom.
I think you could make it more cartoony.
Also, good job on the mapping at the top.
The hair and beanie is amazing.
The mask thing puts me off. Looks like C/P because it just doesn't look like it belongs there.
And I seriously don't get the wood texture.
really, GIMP :O dude, teach me your ways :O PLS!! ill give you 2k for a nice tut.
but whats the matter with the right eye? it has some white coming out...