3 things:

1.) Teach on the ground, practice in the air

2.) KISS! - Keep It Simple Stupid! (Think back to how things were for you back at 0, 10, 20 hours)

3.) Always, always, always...ALWAYS have some true story/BS story to relate a maneuver/proceedure to. That usually helps to drive the point home. That doesn't neccesarily mean scare the bajesus out of the student, but it definately re-enforces things!

Take it for what its worth.
Laxrox

PS. please excuse my spelling...its friggen 3:30am...I can't sleep