Wow, this is a really beautiful piece of work, you're really talented! The lighting on all the rocks and trees was perfect, though I am a mite curious as to why there's a horizontal line of sunlight right there in the middle of the trees?
I love the stylistic method you use to create the trees drooping almost like in a ghost story. Or like something out of The Hobbit, the tree tops remind me of Merlin's hat.