Imogen steps on the slaves head for a minute showing Naomi how to step on a persons head, then Naomi does it in lots of shoes, she is enjoying this and just steps on her victims skull as if she was standing on the floor, she gets to try on lots of shoes and gets to hurt him with them she has never trampled anyone's head before and you can see she is enjoying this, please look at the gif image to see the shoes Naomi was wearing. (Clip is 27:10)