It is a nice image. I love the clouds, and the variation of the plants.
Not sure if you wanted constructive critisism, but here is some if you would like to know:
Composition-wise, you have invoked the 'thirds' rule nicely along the horizontal, but the vertical looks a little off. I would suggest moving the horizon lower a little.
Your shadowed areas lack any kind of detail. What was your GI settings? on a bright day, the ground should be reflecting enough light to see the dark side of the rock. Check out pictures of Uluru (Ayer's Rock) to see what I mean. This goes for the foreground plants, especially on the right side...the blacks are crushing any detail that may have been there.
The displacement frequency in the rock object is causing some moire affect. To get around this, either increase the 'Smallest Scale' parameter in the colour settings, or increase the antialiasing.
I hope this helps.