Really great map! I like the font you have used and the general layout of the map. There are two things that I can think of that might make it look a bit better. The first would be to phase your transition from green to white. The solid line is rather jarring and, more than anything, reminds me of a minecraft biome transition. Making a much slower transition I think would help more. Also, the mountains in the snowy area don't stand out nearly as much as the ones in the green area. This one I am not sure how to solve (I do not work with color all that frequently) but finding a way to make them stand out a bit more would make that area pop a bit.

However, this is still a very good map that clearly depicts everything! Well done!