I myself decided to make my own showcase similar to Arax's. I am not really experienced with making signatures, but that is why I made this thread. I figure I can take requests for practice, if you have a request for me, you can post it here. I am not going to guarantee anything good though, I am rather new to photoshop and am still practicing, but if you want I can attempt to make you a signature.
(That is about the only real signature I have made so far.)