It's cool, but nothing rationally original.
(I strive for originality in sigs, can't you tell =P)

I would keep the arrowhead in the render as it was, and not blended in as it currently is.

Something more is needed in the background to the left of Link, there's too much space there, and to me that only disrupts the flow of the sig. Something bright maybe, like the renders you have in the corners.