The back of his head, and the top of the line(comes out from the bottom of his chin) also is pixelated. Blur it. And its ... I don't even know what to say lol..
Its a good signature, the right (sunny) side looks good, the darker could use work, but its still a good signature.
Something about it though, probably what Shout said with blending, but its a great signature.
Like I said, I like the right side, glad to see you're still alive buddy.
So blur those 2 things, mb fix the blending a bit, and it'd look even cooler.