Think LEFT.  
Base - Approach your Flier as you would for a normal Toss. You should initiate the twist about half way up the Toss. The Flier should already be twisting before the release. At the Flick, push your right thumb forward and pull your left index finger backward to help finish the twist. Leave your left hand open, palm up and your fingers facing forward. Your right hand will assist with the grab of both feet. By grabbing both feet, you stunt will hit more consistently, and the flier can make an adjustment before the pull of the arabesque.
Flier - During the Toss, help initiate the Full by looking over your left shoulder. At the Flick, push your left hand in front of you and push your right hand behind you while looking to the left.
Base - Once you have released, and the Flier is facing backwards in the Full, begin to reach for both of the Flier's feet. Remember, since the Flier is backwards you will have to grab a backwards grip. Your right hand should be turned around and reaching for the toe and your left hand should be pointing forward and reaching for the heel. After you have grabbed the foot, continue to let your hand rotate with the foot until the Flier is facing to your right side.  Then make sure you squeeze and she pulls her arabesque
Flier - Keep your feet together, almost in a Cupie position, until you have rotated all the way around to the right side. Once you are facing to the side and the twisting motion has stopped, and then hit your Hi torch by pulling your left leg up and turning your chest to the front. It is important that the Flier stays in the tube during the Full. Bases don’t jerk the Toss to much as it might push them out of the tube. Also, Bases, you have to spot that foot before the Flier has completed the 3/4 twist.