Now, aside from making a completely immature comment on the shape of some of your landforms, I personally had some trouble realizing that the lighter green was grass, as opposed to a less dense area of the forest. It seems a bit to green. I can understand lush fields, but something about the texture and the color gives the impression that it is forest. I'm not completely sure what the best solution is, but either change the colours used for the grass, or make the forests stand out a bit more. (oh, and I am terribly sorry if that actually is a less dense forest.)
I like the beaches, though eliminating the trees that seem to get cut off at the water might help. I'm interested in how you do the mountains, however, and I think they might help the feel of the map a lot.