That's quite a bold and heavy contrast you've got going, I can't personally decide if it degrades or promotes the piece. On the one hand it gives a beautiful rendition of the contrast nature has on everything, which is brought about by the effect given, on the other it looks quite poorly done, almost as if you decided to pick up the brush and swipe across the design for a laugh!
The rest of the design is pretty standard stuff, but the end result is ok.
Reading between the lines of my rants, I like it, but in the eyes of a photoshopper you'll only get evils!