Kat,
First of all *points at SJ* Ignore him, he hates everyone and everything anyway. Expect him to always be displeased with you, and that way when he likes you, then you know you've done something right.
Secondly, I liked the first signature better. The second one just looks thrown together. The first one looks more character-originated, and I know there are a lot of people who can either help you to make it better, or that can design one for you.