Compliment him a lot, check him out, be extremely eager to do stuff for him, and my alltime favorite, roughhouse with him and lose pathetically with your inferior female strength.
Bonus to that last one is that it turns into sex a good amount of the time.
Cock worship is great too.
Be skinny. Put effort into your appearance. Cook for him. Don't nag him. Be supportive.
Tell him your body is his and he can do whatever he wants to you. Then when he does, be enthusiastic about it.