What I feel directly when looking on that render; is that since it basically is a mountain, the closest mountain shuldnt be covered really 100% with grass. That also affects the far distant mountains. But overall it looks good, I'll say to you as I say to most of the others, work a lttle more with the water, just go over the settings and you will be able to create more nice-looking renders But I really like those smooth edges you got.

Summary;

1. The grass is to high on the far mountains, and also covers to much on the closest mountain/beach.
2. Work on the water