That liverpool one on the 4th page you made was pretty awesome, were I a liverpool fan I would have nicked it!
Anywho, if people still can't figure out how to make it bigger, one guarenteed way is to save the picture then load it onto imageshack and then post it into your sig from there. Takes a bit longer, but it will work.
dc if its possible seeing as you've got better could you update mine a little i still want the same principle but different backround if you no what i mean