Would really like to see more definition worked into the hills and the trees; for me, this is too close to being a sky shot rather than a place shot. It would have been a fairly easy trick in post, too. Good shot though, but I don't quite think it nails the challenge enough. 7
Nice sky, but the trees and hills are quite dark. Could have used a bit of dodging. I like how you have some trees in the foreground to frame the bottom of your image.