first off...you gotta move that text off the outside of the sig...try to have it not touching the edges.
second of all...add a border. even a simple black 1 pixel one is good, as long as there is something.
the pic of portis in the BG blends a little too well...i really had to look hard to see what was going on there.
other than that minor stuff...great lookin second sig.
im not familiar with GIMP software, so im not sure how to compress it to cafe size..if you want me to do it for you, just let me know.