I like it but I see a couple of things I'm not too keen on...
The
one bird is a little unlikely, unless, that is what you were going for. That's only minor, whatever the case.
Also, the stones, especially the large ones, have a little too high displacement levels, they seem extremely spikey to me.
I think you unchecked 'do ray traced shadows' in the render node, aswell, else there would be shadows behind the rocks, your sun is directly in front of the camera but this doesn't translate in the shadows of the rocks/terrain.
Or, maybe you have some back-lighting, or some extremely high GI strength on surfaces cancelling out these shadows? It needs a little shadowing, is all.
The clouds seem a little stretched on the Z aswell but that just seems to be a camera/aspect ratio setting, I think, not anything to do with the cloud fractals, unless they are warped a bit much.
Nice, though, I like the basis. T'is good!