I agree with squidge/KIABIN. If you're going to make the signature commercial, at least base it around an aspect of the commerce, or learn how, rather than creating a signature and just slapping irrelavant text on the top.
The signature itself is pretty decent, it has two focal points/ little flow/lighting, though it is definitely one of the best i've seen from you, so keep up the good work.
Learn to integrate text into the theme of the signature to make it work, rather than slapping it on. You could do this by juxtaposing it (in a sense that it'd fit with the flow and composition), adding it to the flow, clipping/smudging, having it as a lighting source, etc.