Click on this Photo to enlarge it.From the left, fig. 1,2,3, The release sets you up for the next turn. Farthest right fig 4. The top of the new turn sets you up for the ability to control the arc.
We teach movements for these important parts of the arc. That's where I begin, I evaluate how a skier negotiates these parts of the arc and whether he is using the correct movements to achieve what he wants from the arc.