Natasha binds the hands of her slave above his head, so she has some advandage.
She decends on him, straddling his belly with a SGP (School-girl-pin).
Slowly she walks on her knees foreward, high on his chest... on his throat.. and finally on his face.
She kneels on her bound hands above his head, he has no chance he's in her mercy.
She pounds his face until he runs out of air, moves a little back, allows him to take small sips of air, right out from her crotch-area... No air or... Air + some aroma :-)