your border is bit too thick .
try to use the saturation tool more often to make the colors really catch the eye because atm, looks a bit dull and dark overall .
Your username stands out more than the quote you're trying to put out, maybe make it much smaller and less noticeable .
Your quote could use some better fonts but overall, your sig looks good
(I probably didn't catch all the mistakes but it was the most of my nooby skills that I can at least help you with ^^ )