The ankle has only two native movements; none are exactly what you need to control your skis.
Both basic movements of the ankle joint have some shortcomings, so using the ankle instinctively can guarantee an unwanted backseat or skidding when you want to carve, and so on.
A big part of learning to ski is separating the ankle movements into the desired directions.
Understanding the function of the ankle helps a lot in finding the correct movements.
► CHAPTERS:
0:00 Intro
0:57 Why to Improve Foot Movements
2:28 Main Directions
2:55 Ankle Flexion
5:13 Foot Tipping
7:48 Foot Rotation
8:31 Native Foot Movements