At first glance I thought, Hey, that looks like the effect plastic wrap is supposed to achieve...and then I read the comments...I tried it once but took it up too soon and it didn't turn out. Glad I get to see an example of what it's supposed to do; awesome work!
Did you use plastic wrap to get the rock texture? It's nice. I like the way the patterns of light and dark are almost, but not quite, abstract. I also like the eyes of the wolves. There's something sunken or empty about them.