Its advisable to practice making one turn and stopping before attempting to link a series of powder turns. On a gentle powder slope, start off skiing straight down the fall-line and, using exaggerated flexion/extension movements, make one powder turn and stop. Then start on a steep traverse and make one turn. Then start on a shallow traverse and make a turn. Then repeat the same sequence to the other side.
This Video Tutorial is from the “SkiTips 3” App for iPhones and iPads and from the “Powder and Off-Piste Skiing” eBook, both available on the Apple AppStore.
Off-Piste & Powder Skiing