Fenner's "Conscientious Marine Aquarist" and Fenner/Calfo's "Reef Invertebrates" have some aquascaping suggestions.
Tullock also has some suggestions.
I would say, don't make just 1 big pile, and don't stack neatly. Leave nooks and crannies that can collect the maple syrup (oops! Wrong forum) Leave nooks and crannies where fish and inverts can hide, tunnel, or play.
My own style is islands and canyons, but different strokes, etc.