Really nice work so far! I'd just have to say that maybe you should add some more faint clouds to the sky to break up that heavy blue space, and those mountains have the same level of details as the foreground figures.... Add some atmospheric perspective and redo alot of those shapes with a larger brush. Might also want to punch up the contrast in those trees: they're a touch flat. Love the dandelions and the butterfly on his axe!
I don't care what you believe in, just believe in it.
-Shepard Book, "Serenity"