Nope, dont need a name in it ^^ just a quote.
And as for other pics, no it wouldn't really matter. I wouldn't pick a signature over another that, just big caus of a pic. If the actual signatue is good, then its good
And as for the pictures I really don't care it doesn't HAVE to be with zombies.
BUT I would appreciate if someone would actually make a one with Michonne with the realistic pic.
And as for the Koala, just make its funky, funny, awesome, whatever (kinda with the same colors as american dad fitting).
Remember: Feel free to do whatever suits you!
If your confident with ur entry eventhough its not (exactly) what I mentioned, enter it!