Throttling My Slave’s Face With My Big Feet

Its hard to breathe under your Mistress size 42 feet, isnt it? And yet he cant help but bellow from pleasure. My slave truly enjoys having his face smothered and being abused by my feet. He loves smelling my sweet scent and tasting my soles and toes by licking and sucking them. Is there any better way to show a slave his place than putting him under your feet?