Holy smokes, is that whole thing done by hand? That's looks really cool! I like the trees and especially the subtle road network, that's a really nice touch.
The only thing I don't like is the text, which is a little intelligible at places, and (correct me if I'm wrong) seems to have been done with a low opacity brush, so wherever strokes overlap is darker than the rest.
But other than that, this map is tremendously awesome. Nice job!