This is essentially intended to show off that bird wing model I created. You've no doubt seen the bat wings I made in other pics (like say, Maze II and Flyer I). I've been trying to get a soft feathery look without using a photo. The result of this particular attempt is relatively close to the effect I want.
Tech notes: I had a photo of a duck's wing and I modified that heavily in Photoshop. The resulting grayscale-to-height image made this terrain.