Well if you know of rocks that really look like that, then that should override anything. I guess I just meant that it would be good to see some changes from one part of the face to another. Color alone may do just as much as I was thinking. But like I said, it was/is good already.
But it can be kinda hard, I know.
If it was mine? Well I would think about central northern states. Because that is my own preference. So I would add some rectangular or squarish shapes to what you have. Not change anything major, just make it more like rock faces I am used to seeing in person.
I think the comp is really great, and I love how the plants are working. So just more square than sharp. And a slightly different color pallet. (again, thats just me).
If you are just playing and trying to learn new stuff, why not try a clip from the rectangle thread? You don't have to get it perfect on the whole scene, just nice in that one area up front. It was hard for me, but you may find it pretty easy? Just what I thought about when I saw the image.