Here is a template that you could use in your siggy!
***Note: In order for this to work, you must remove one of the [ or ] off of each end ouf both "center"s.
EX: If you copy this, it reads:

[[center]]
[u]Name[/u]: Your pet's name
[u]Level[/u]: Your pet's level
[u]Posts[/u]: # of posts made with this pet
[u]Another stat here (optional)[/u]: Blah
[[center]]

But, in order for this template to work properly, you must fix it, by taking [[cnt]]off of center on the top and bottom. If you still don't understand, please feel free to ask. ♥