Ok in trying to keep things simple here are the rules for race creation.

try to keep the races balanced. Meaning if you up one stat lower another.
I'm working on an idea for races that are more powerful but have level penalties.

These numbers add to the maximums a starting character can have in each stat.

Example:
WereWolf

Health +1
Sanity -1
Attack
Defence +1
Magic
Willpower -1

So this means that a starting character may have a max stats of
Health +5
Sanity -3
Attack
Defence +5
Magic
Willpower -3