http://i35.tinypic.com/34zbvjo.png
http://i34.tinypic.com/v2wz9y.png
=D
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I can't comment on the vector stuff because I have absolutely NO experience with it. From what I've seen, in a vector-looking signature you should keep the focal point rendered and not "blur-down" the sides of it.
The overall signature is pretty cool though, also try adding a more visible border. When I look at it my eyes float off into the background of the forums. xD
Thanks ^_^ The vector look was totally accidental xD