That's a good question, Hern. Living it and talking it are two differnt things altogether, aren't they?
I would start simple. Have a few rules only so that it is not an overwhelming task. That way, when she gets those down pat, you can, if you like add more. Simple things like remaining shaved, doing certain tasks around the house. What ever tickles you fancy. There is no set guideline to rules. It's what ever you two decide what you are capable of and what you are interested in.
Good luck!