Very nice Rob. I would rep you, but I just gave you some for your one of your Tutorials.

If you were not so far along on the mountains, I would say you should consider trying to force perspective by making the mountains in the foreground a bit larger. The river at the top flowing into the sea from the north already gives me the impression of a bit of perspective and would be even more so if a tiny bit broader at the ocean/sea. I might just have to take this map as a basis and give this idea a play. Probably won't come out right since I don't have a tablet, but what the heck...

Joe