A good technique for writing fiction is to first outline it backwards. That will keep you from getting to the end and not being able to come up with a cool ending. You think of the ending first, then what lead up to that and on up to the beginning.
Simple Example:
*Your mom is shaking you and asking, "What are you screaming about?"
*You're thrown out of the airplane.
*There's a fight in the plane.
* He/She is harrassing you.
*Your worst enemy is on the airplane.
*Some friends want you to go skydiving.