Say another Thank you to me... :shifty:
Anyways, it's good work. The background kills everything in my opinion, the cracked glass brushing and some abstracts... they don't really go well with each other. So the background is probably the weakest part of everything, change it to some decent brushing or apply pre-made textures.
Another thing? You don't know how to add a border? lol. Merge everything and press CTRL+A and then go to EDIT>STROKE and give out a 4px WHITE stroke, press CTRL+A again and now add a 2px black stroke and you have a pretty much decent border.
Check out the tutorials on how to make good borders, that border looks horrible in the signature over here.