It looks like you overdid the blurring a bit to me. It would look much better if you reduced the actual size of the whole signature IMO.
interesting concept. there is just a little bit too much blue in it for me. making the gfx itself a bit smaller would help, maybe try cropping it on the left side and bottom. it seems like there isnt enough other detail for the rest of the gfx. the eye is the focal point, but im not sure the point of the rest of the sig. maybe try a transition to another color or 2, but if you crop it a bit you might not have to. it just needs a little work and i think it could be really good. have you tried some text?
the size and quality looks great on my computer but when i upload it into photobucket it loses the quality and the image gets bigger. can anyone help me with that??