Quote from JonMskdr, what program are you using? If your using like max or maya I could help you out with a lot with itAlso add in a sky now, I find that it helps in working the other elements when that strong element is present, because you may wind up seeing that after you add a sky in that it doesnt relate to rest of scene or vice versa etc...
It always best to develop by not focusing in on certain aspects without giving the same amount of focus to others, meaning working the whole thing at once. imho anyway
I'm using MAX. PM me and tell me what you have in mind?