Unhook, bend the knees, and sheet in so you are heading down wind. The more speed the better.
Extend the front arm forward and sheet the back hand toward the tail of the board. This causes the wind to spill forward and over the sail.
Keep the knees bent and really put a great deal of pressure on the inside rail. The foot of the sail should be against your shins.
Notice your back arm stays bent, front arm straight until you are on the other tack.
Now complete the jibe by returning the sail to a vertical position by pulling up with the forward hand, straightening your body, and releasing the back hand.
Continue carving but bring the mast vertical.
Flip the sail and finish as a normal jibe.