I’ve had the same Gravatar for a while now, so I figured out it was time to make a new one.
Here’s some of my old ones. As you can see they all play with the same theme:
Three versions of the same one:
I wasn’t satisfied with this burning head, so I never used it as a gravatar:
Trivia: The English word “skull” is probably derived from Old Norse “skalli” meaning bald, while the Latin word cranium comes from the Greek root κρανίον (kranion). (Wikipedia)
Here’s one more: http://artishorseshit.wordpress.com/2013/01/07/the-cardinal/