Always start looking at the feet and work your view upward.
What is your weight distribution inside foot vs. outside foot? I prefer 90% on the outside foot from the very beginning of the turn (well before reaching the fall line).
At about :06 seconds, at the end of that left turn, your left ski tip looks like it is off the snow. At that point you should have 90% of your weight on the left ski, and 90% of that on the ski tip.
In the middle of your left turns, it looks like your right knee is too close to your left knee. This can be due to being undercanted...ask the Ask The Boot Guys about canting and maybe supply them with a video. Or, you can be driving your right knee to edge the skis...widely used but poor technique. Instead, don't push the knees to the side; strongly tip your left ankle to its side for left turns, etc.