The signature looks fantastic, I'd give it a solid 8.5/10. There are a few things I've noticed and will be happy to give you some constructive criticism. I've noticed the Million Dollar Championship is slightly off center from DiBiase's waist, and could maybe use a little bit more of a blur effect around the title? You could also maybe make Ted DiBiase's name a little bit bigger, but that could also be my resolution settings that makes it appear small. Lastly, it seems like all the focus is directed to the middle of the signature, because it doesn't seem to have a general flow throughout the signature, so maybe add some money around the top right hand corner and the bottom left hand corner of the signature.
I love the Bret Hart signature, I'd give that a solid 9.5/10. It looks fantastic, but I'm not really of fan of the white shiny effect? (I think it's an effect) on the Jacket of Bret Hart, it seems a little odd, but again that could just be me.
I love the Dexter signature, another solid 10/10. Very well done.
Oceans Eleven signature, I'd give it a solid 9/10. I've noticed that the chain link fence that you used needs to be blurred a little bit more or something, because I think it stands out a little too much.
I'm don't do graphics by any means, it's just some of the things I've noticed.