Oh - EC, sorry, i forgot that the TW rules on signatures are foolish/unintuitive.
The correct height for a signature if 450x190, i made them smaller in both height and width.
Anyway, had fun making those sigs, sorry they aren't able to be used.
Also, an odd question for you. Can i (hypothetically) be reprimanded for my current signature, where the image no longer works. I haven't purposely broken any rules, they've been broken by a third, outside party.