Thanks guys.

Actually, I'm really inspired by the maps of Forgotten Realms and Dragonlance of 3E. I think this kind of map is the most accurate for me, because the top view of mountains and hills. If I draw them in other way, it looks like is missing something behind. Also, I'm big fan of Rob Lazzaretti and Schley, so my maps look like their naturally. But I really would like to draw a map with "pencils + digital colors technique", like Cary Nord's drawings in Dark Horse Conan comics, you know? I think that gives a great mood to the maps.

What do you think I could do to improve the hills?

And about the ground? I miss some texture, don't you?