At this size, your town-labeling font can be a bit hard to read. Your terrain and coastline look pretty good, including the rivers, although I'd expect that with two mountain ranges going up to the sea, there would be some islands where the chain extended into the ocean. I'm not sure why you made the edges of the map darkened and ragged. The two effects don't work well together. I would also have put something in the ocean, because it is a very large empty space right now. Label the islands and name the ocean, and you would have at least a good start on making the map not feel half empty.