I'm trying to think of a new Fan fiction to do. Got any Idea's?

how about one where some of ur fav characters get stranded on an island, with a REAL killer on the loose. But wait! One of the total drama people are working with this person. Reason? because he/she doesnt wanna loose their life, but in reality, the killer will back stab that person and try to kill him/her. :3

How do u make a Fan fiction