Use your own style. I will be willing to pay up to 10k for both.

My favorite is Absol

Try to do a closeup of absol's head for the avatar, also put a box around it like my current avatatar. Also do what you want with the signature, but make it related to the avatar

So far Lolita's is the best. it's around a 7k value for both.
but I'mn waiting for anyone to top it.