Wonderful. I am now officially your fan!
I love the style of your work. You have something really great. If I had one (tiny) crit it would be to make the grass texture a bit smaller. It looks great zoomed out but at full scale it looks a little big. There is a really great natural looking grass texture here: Spiral Graphics - Free Seamless Lush Terrain Textures
look for the texture called: Just add bison