I got asked a while ago to do a screaming monster of some kind for a really cool company that makes the program "Dehumaniser". The program is used in the entertainment industry to make awesome monster effects based on your own voice. The nda is lifted now and the software is out so I can show you the illustration. Had a blast working on it, go check out their program.
Here is a link to their website: http://dehumaniser.com/
Take care and have a great weekend!