Completely winging this. I don't have a lot of time to go for a flashier or well-drawn sig, so I went for something simple.

Avatar:
[IMG]http://i.imgur.com/iKIeCY7.png?1[/IMG]

Sig:
[IMG]http://i.imgur.com/UJICrL4.png[/IMG]

Biggest problem is that the sig size limit blurs the picture. A resize from the program itself might avoid that. Or making it a vector. I'll fix that when I get the chance.
(Original picture is from [url=http://eudoxe2000.deviantart.com/art/Fox-8315824]"Fox" by eudoxe2000[/url])