Ok. This is wonderful. And I love the weathering on the skull.
Hey: I've been dying to share this one, though. To make good "scaled" cobwebs, use a "used" Bounce dryer sheet. I got this demo from a good friend at my Fantasy Modeler's Club of SF, and he just pulled the material apart, Elmer's glued it down, and let it dry. For an aged look, he gently dry-brushed a little gray or black.
I kid you not, it is SO much better than shredded cotton balls!(None of my business, BTW, your work is incredible!)