after going through this whole process myself, i can tell you the order of tihngs to try.
1. do a 180 to belly drop. this is called a half airplane.
2. do a 180 to back drop. this is called a full airplane.
in both cases your head should be pointing backwards from how you started. if it isnt, your doing it wrong.
3. do the full airplane, but put more rotation. This is the first method.
second method: just try spinning over your shoulder. this is the hucking method, and works for some people.
third method: do a 180 to misty 5. DO NOT CHEAT, do a full 180 before getting into the misty rotation. if you cheat you will not do it.
This is how i teach it, remember its only my opinion. try these out and see for yourself.
Best of Luck!!