Negative Size Modifier, Basic Lift, ST and Max HP

Hello! I'm trying to create a small Pixie creature SM -6, and I'm wondering about a few things.

I'm having a bit of a hard time getting all the info I need. I thought I read something about negative SM would divide the basic lift, and they should start at ST 10. I also read some where they recommend 1 HP for creatures that small, along with very low ST.

Does anyone know of the rules on how to balance very small Player character creatures?

Thanks!