I've been trying not to be a DNMC type of guy but I think you squeezed this one in... Why did you focus so much on the foreground? The background looks much more interesting but is kinda soft...
TC
The sun is just too harsh on the rocks, try going over it with a the brush tool set at "soft light" and the color black at like 40% opacity and going over the rocks to give them richer darker color and light.