Damn you gotta make a tutorial on these sigs.
Kennedy One - I like the colours and the text. Except for the small text, I can't read it. Good use of brushes aswell. A very good sig.
Halflife One - I'm not crazy about. I don't know how to explain it. It just doesn't do anything for me.
Assasins Creed One - Again good colours and a very good sig
You are very good, keep up the good work