Even if I find myself on the receiving side of dominance, doesn't mean I have no interest in treating a man like my own personnal bitch.
I'd keep him on the floor, at my feet. Preferably in a collar and leash. I'd tug at the leash randomly to show him I haven't forgot about him.
I'd just speak to him in short, brief orders. Make him lick my toes while I look through my sex toys until I find one that pleases me. Either to insert in his ass, or to pleasure myself while he does what I tell him to do.
I'd allow him to cum sometimes. I am a good mistress after all. Doesn't mean I wouldn't make him swallow it back however.