I like that render. I think it has a great sense of scale and depth. I think the colors and lighting are very convincing. Still I have two "complaints":
-I like the blurred foreground grass, but some more samples would help and for my taste the blur is to much, should only happen on the plants really close to the camera. But probably I am misjudging thecamera-grass distance
-although the lighting is convincing, it could be more "spectacular". It´s a little bit like many of my "snapshots" with my camera. I am at a nice place, at a certain time and then take a photo, which looks nice. But to make the photo look spectacular, I would have to wait for a "better" light and daytime, which I usually never do ;-)
The mountains in the back fi into place, in my opinion.
Very nice work!