This is another lovely new style, Voolf, and well worth developing
In future renditions it might help to actually fill out the forests with tree tops at the same density as the edges, but that's only how I would have done it... if I was as good at drawing as you are!
I agree with jfrazierjr, in that the coastline is the worst part of the map (if such a great little map could even be said to have a 'worst part'). To develop the style maybe consider punctuating the coastline with a couple of much higher cliffs, and also couple of sandy bays where the sand just runs right up into the grass of the land?
Those are just a couple of ideas, though. It is, as I have already said, a great little map