Looking very nice indeed! The lines of the mountains remind me of Clercon's work on this thread.
In terms of suggestions, perhaps some noise or texture in the desert area (although I guess that's probably on your to do list already). The mountains look great at a distance but a touch blurry close up, the general formation and lines look fab though.
I really like the forest texture. Keep going, this is going to be a great map when it's done.