A very nice job!! I like the colors, the style and the overall composition. Rivers look good, mountains are well drawn, but see this thread for more ideas to improve the mountains:
http://www.cartographersguild.com/sh...ight=mountains
I've used the "picture overlapping the frame" in other art forms, but I don't think it works well in cartography. You really need a neatline and clear edge to the map, IMHO.