I just got my son a worst case disaster book that had a section on how to survive if your primary chute does not open. You first should try the reserve chute. If that fails, look around to see if there are any other skydivers near you and try to glide over and grab hold of them. If all else fails, spread your arms and legs to help slow your descent and try to position yourself so that you land going down a hill or a tree so as to break your fall. A little prayer may help also.
