Colors look good, nice coastline, I like that elephant skin pattern thingy for the mountains (might have to try that because it gives the general look and feel of a satellite shot without having to do all of the work). There is one river system that is not connected to anything draining to the sea (middle top), and one that looks like it avoids a nearby bay to go over a mountain (left top). Everything else looks to be in order. Nice to look at and given me a new idea to work with, so I say good job