I too like this render, the lighting is very nice. But I do have some criticism; you should do some more work on the barren grey shore on the right, IMHO. It's a bit nondescript... is it mud, or stone? Maybe some vegetation and fake stones or more color variation would increase the beauty of this image. I would also decrease the 'wildness' of the water to very subtle wavelets. And if you could do some vine-like stuff (hanging algae) on the fallen tree, that would really be awesome.