New Avatars and Signature help

[Rigel4]

Good Afternoon
I am wondering if someone knowledgable with this site can set out some instructions to port over our
Avatars and signatures.. I had a go at mine , but its not full size and dont know what else to try.

I couldnt do anything with my signature at all as i want to use a banner type thing and not TEXT.

Any help greatly appreciated ..