I was also in my first horror film this month...somewhat accidentally. I was eating a late dinner when my friend Andy called, somewhat panicked. He said he had a film due the next day for film school and his actress for the shoot never showed up.
So I headed over to the set, got in makeup and a dress, and proceeded to "act" in a film in which my "boyfriend" kills me and I come back to haunt him. If you laughed at the parts in quotations, you should DEFINITELY check out Andy's incredible 3-minute film, The Red Dress:
https://www.youtube.com/watch?v=UQrqf-zxfC8&feature=share
Golly, I hope my boyfriend is okay...