Smothered By My Big Powerful Feet

I want to have some joy with the slave and order him to lie down - so I can sit above him and throttle him with my feet! My big nude feet cover his nose and mouth easily and he cant breathe even a little. I try out a few different positions - like standing on his chest with one foot and smothering him with the other one, standing behind him and covering his face from chin to forehead with my big foot, sitting on his stomach and pressing my feet firmly on his face - all very comfy for me - and all of them leave the slave breathless under my feet!