Good realism in the scene and lighting, but I have to agree with a previous poster about the large boulders there are just too many crowded across the foreground. It also seeems that some of the bigger rocks have rather odd/unatural planes and angles to them. Some additional variety of ground covering (perhaps sand?) towards part of the water area might be handy to give one relief from that very lengthy field of large rocks. This image is very good, but I belive it can get even better with further development.