Focal point is too blurred and the text is in a place which distracts from the stock. Most of the stock being in monotone makes it look flat. Blending is good, just work on compo and depth.
I think if the hand wasn't so bright it would dramatically increase the looks of the sig. The text sticks out alot and doesn't blend it as much as it should and it needs the usual 3 px border =p
Overall good looking signature. I just pointed out weaknesses.
Although, it does look nice as it is, you could try take away the shadow on both words, and just put it at a 90 degree angle on the word 'Billyy', I think that'd look better. Also try with a thin black border. Although, it does look nice as it is,