Looks good - the only (hopefully constructive) comment I can think of is that the green is a little unbalanced, in that it's all on the right side of the image. I see that's where the leaves are, so to be consistent you were stuck with that; maybe a touch or two of green on rocks on the left would have added a little balance (I'm thinking maybe the long rock that runs left-right immediately above the first big rock in the bottom left, and/or the shiny small round rock just to the left of the top center). This is a totally uninformed comment, and I don't really have any idea if it's valid, it's just what struck me in viewing the image.