Hmmm, it's okay, but with terragen obviously it is hard to get the hang of it, so it's okay for one of your first. Like i said, there is so much more you could have done. Your fg and bg seem too seperate, which is mainly because of the mountains in the back ; there isn't enough, which is hurting the depth. Lighting is good. Clouds aren't good at all, especially the blending around the rock in the foreground. But, like I said, it's one of the first you've done, so you'll get better.


EDIT: if you're looking for inspiration, click on the luminarium link in my sig. It's an international art collective that i contribute to, and there is amazing artists there that use terragen in their pieces.