Need advise in a mixed wrestling male domination match

rough outline of my story which involve a very vulnerable pregnant lady being erotically and somewhat manhandled in a mixed group wrestling/boxing match. The Outline may sounds abit violent and taboo to the many, but I had to make it tame down a little in order to stretch out to a larger number of target audience to accept the story in order for them to enjoy reading it.

I have difficulty in character building and tend to keep having repeatitive moves which some reader will find boring. I really need more ideas to expand into my essay and hopefully this will be my first piece of work to contribute here.