That's very nice (you're quite talented!), but WAY too large for a signature.
From the guidelines -
Lastly, a note about signatures. Your signature (what you create in your profile to appear at the end of your posts) is a great place to express yourself, within reason. We ask that you keep it to roughly 200 pixels tall (click here
for a size example) so that members viewing threads don't have to scroll past an enormous signature with every post. Discreet text links to commercial sites (such as your own yarn shop) are allowed, however banner/image advertisements are not.