What kind of advice do you want?
First you have to find out who all your cousins are.
Next you have to type them into your sig with a title. (title is optional)
Finally above all of them you can type My TFF Family or something to that degree.
Also if you want to have it like most people use the
[marquee] tags. That will make them move like mine do.
I hope these were the tips and advice you were looking for.