Buy a love restraining kit (kuffs, blind, leg chains, and gag) ask him if he wants to try something new. Maybe try bounding his hands or my favorite pull off your juice soaked panties and cram into his mouth.
Can't change the stripes of a zebra...many have tried and many have failed. you could play to be dominant but it is a natural thing you have in you. My advice, find a dominant sex friend... Oops...that is to much... did I say it aloud? LoL sorry! I am out...
That's easy tell him what you want in detail
A man who is trying to be dominant for you, no matter how he acts when he is doing it, is not dominating. He is role-playing.
He will be constantly measuring his actions against your reactions, insuring that he is not overstepping, not going too far. No matter what you tell him about your limits, your desires. It is not how he sees himself with you. Depending on his ability to role play and his connection with you, the ability to see your desire, push you slightly past that, he may in fact be effective. But it takes a special person to absorb himself in that role without allowing the "actor" to show.
Because trying to be dominant and being dominant are two very different things
Role play?
Throw his iPhone out the window?