Hi Tim! The scene is looking cool, I like the elegant straightforwardness of it. Going by the older scene shots, I would say your diffuse is too bright. Even though you are going for a very white-colored rock surface, consider damping the brightness on your diffuse texture so that more subtlety in the lighting can show…
Hey, instead of moss, what you would want is Lichen. Moss doesn't tend to grow on a mountain top (as I assume this is. It certainly looks like one) but Lichen, really, is over-prevalent. If you see this image taken near Mt.Washington's summit, you will see what I mean:…