Thanks for the two replies Ascension and keithrgordon. I tried to improve your points.
@keith: Im not the one to honor for the mountains, these are photoshop brushes from Ramah and vhailor27. You can find them here.
New version with less texture on the ground and smaller city marks. Also I changed the font of the cities. Just to see if it looks better and less computer-generated.
edit: I just tried to make it look a bit darker and I think I like it better than the light version. What do you say?