The slave is trapped in a hole, his face is upturned, cannot move away, he must take all, what Daliah dishes out directly on the front.
First she sits reverse on him, he must hold his breath, no possibility to take a littel sip of air with moving his head.
After some sittings she shows him, how the hard way can be and steps right with all weight for a short moment on his face, the nose gets nicely crushed under her bare feet.
More facesitting in different direction, crotch to nose squeeze actions, footsmothering and so on....