Of course, now that I've put the composition together for a test peek, I find out that I do, in fact, need to render in the little tree at the base of the mid-range rock. It is the wee details that make the difference in the end, god damn it.
Not bad, though. I like it -- it's less doomed than most of my art.
And once again, I'm reminded as to why I almost always use inkblots for my very unrealistic skies -- the right choice adds a fat slab of energy to the composition.