Thanks for everyone's suggestions on how to combat an art block! I read each one and tried to incorporate your ideas into this picture, and I like how it turned out.
Also decided to try and listen to screamo music to see what would happen. I don't enjoy the genre very much (I like to listen to alternative, electronic, and soundtrack...I could go on forever how amazing John Williams is) and after about half an hour I switched to Disney songs as a remedy. Seriously, listening to "Kiss the Girl" while painting the teeth is very weird XD
Anyway, the Whispering Death is one of my favorites in terms of design, right after the Night Fury and the Hideous Zippleback. It's a shame we never got to really "see" one.