Right now your signature is around 694-698 pixels wide... the maximum width is 640. And if you want a sig, go ahead and post in the requesting thread - there's plenty of people who would be willing to make you one then!
It's a bit too wide at around 700 pixels. The maximum width is 640 pixels. When you add up all the file sizes they come to around 47K and the maximum size allowed on TCS is 30K.
Why don't you post in the Signature Shower request thread and ask for a sig?