Milena wears a neew pair of sneaker, they have to be tested... offcoarse on her slave.
She steps, carfully in the beginiing, on his chest and walks a little bit in place, for feeling the reaction under her sole.
The she places on foot on his face and slowly increasing the pressure on it.
She does several walks on his body, head and face, sometimes she stands with all her weight on the upturned face,
Maximum face-crush under her hard sole.