Corpsing is how we make skulls and bones look like they still have some skin left on them. We even do it with pumpkins and dolls. I think we've tried it with just about everything. Here's a couple of ideas..
http://www.hauntforum.com/showthread.php?t=27161&highlight=corpsing
http://www.hauntforum.com/showthread.php?t=28345&highlight=pumpkin+corpsing
http://www.hauntforum.com/showthread.php?t=27161&highlight=corpsing
http://www.hauntforum.com/showthread.php?t=28345&highlight=pumpkin+corpsing