The air layout is a very advanced trick with very few that have actually accomplished them. The trick is thrown off of the second bounce created from landing a wake trick.
In order to be successful, you must already know how to perform wake layouts well. Hold your wake layout a little longer than normal in order to allow the line to load up more. Land slightly tail heavy and on your outside edge. Lean away from the boat on your bounce and then throw the layout at your maximum height achieved. You'll need to pull back in as quickly as possible in order to prevent catching the tip. Good luck!