Welcome to a place of vision and beauty. Welcome to the world of space art.
I'm using Zbrush with Lightwave 9.6. Unlike LW11 it does not have plugin for direct communication with ZBrush. This asteroid or comet nucleus was my first serious attempt in ZBrush. http://spaceart1.ning.com/photo/crater http://spaceart1.ning.com/photo/crater/
Lot of features I sculpted by hand but it will be more efficient to use presculpted craters or other features via alphas or in late versions of this software even using geometry.
I've been learning it for a while. Sadly, I haven't gotten very far. I have seen some extraordinary, and most impressive, models made with it. Would like to use it to make spacecraft as well as aliens, of course.