hmm.... Yes it dose nead a bit more contrast betwean the sky and the mountains because i can, but barely, destinguish them! But i like the way you have made it like a painting!!!

Wonderfful idea!  It needs a lot of reworking though.  Your biggest issue is contrast, then sun and clouds are barely visible.  I would make the sky darker so that the mountains, sun, and clouds are more easily seen.  Same goes with many of the lighter textures on the mountain.  They give a very subtle impression, and I didn't notice them until I zoomed.

So yes, more contrast! :D