For example, when a man is forced to stay on the edge of orgasm (the moment right before he cums) he will do anything, and I do mean ANYTHING you want. He will also do anything you want in exchange for your permission to cum. You can even deny him the right to his orgasm and prolong his agony, (or pleasure) for as many minutes, hours, or days that you wish ;)
Do you want flowers? A diamond necklace? Or maybe it is something as simple as help with the dishes. Whatever it is you want or need, he will give it to you as long as he is sexually stimulated on some level.
You don't really have to do much. If you are uncomfortable with the full out Dominatrix role, or don't like to wear sexy, erotic clothing for whatever reason, that is OK. There are many Doms that never change out of their everyday clothing. And many don't even touch their subs (people who like to be dominated, such as your man.)