Affiliate Marketing Secrets

I am in a play and my character dies. The way it happens is she is in a room and the lights go out. She screams and then makes choking noises and falls to the ground with a large boom. I am having trouble making choking sounds without it being cheesy or unrealistic. Plus, I am doing a run-thru in front of everyone affiliated with the play and the lights aren’t going to be turned off for this time. I feel it will be a little embarrassing if I can’t do it effectively. Any suggestions?