Text isn't bad but it could be closer and moved up some. Also add some more effects to it, the background stock is fine but needs a slight texture over it. The only problem with this is really the render effects, they look a little LQ due to some of the stocks used, and the lighting is bad. Try at it again, like I told Rios check out some of Greg's psds they are sooooooo easy yet effective.
You just can't put a name and call the text work done, add like some x's or o's and blur them. Add his number and some subtext, but also know that all the text can't be the same color and font. And I think some pattern overlay's would look good over the whole sig and in some random parts.
That its better, but some parts are too light. TO draw more attention to the render use a black soft brush with a low opcaity on the sides and corners. Also change the green 3 to maybe a black or dark gray.