I will give it a go!!
Pressure and Edging: This skier has good control of his edges and understand how to use pressure at the end of the turn to control turn shape. Not much work needed here. However, what I will discuss below will indicate that I would like to see an earlier inside edge and more turn shape control at the top of the turn.
Balance and Stance. The skier is in the back seat. The skis are accelerating ahead of the skier. At the end of each turn the skier must make a huge adjustment to come forward and down hill in to the new turn. Therefore, a pendulum movement can be detected, as the skier must throw his CM laterally across his skis to get into the new turn. This is a 3 to 9 O’Clock move a huge swing. The CM moves into the new turn later and later. All the turn shape is at the end of the turn and there is no early inside edge in this skier. As a result there is also a banking into the turn.
Rotary. There is good steering and guiding of the skis as the skier maintains a good parallel turn throughout the turn. There does seem to be a little upper body rotation to start the next turn. However, this may be a result of the shoulders going along for a ride and the resulting throw of the CM into the new turn.
Overall though this is strong skier that has a lot to work with. Several things come to mine to help this skier attain the next level.
1.They must orient to driving in the front seat. On a groomed green set up in a wedge, close the eyes, glide briefly and wedge stop. Where is he probably in the back seat. While on that same green have him do his best wedge turn. There will be a stem to start it. Introduce in a slow wedge the heel/toe move to initiate the turn. That really helped me under stand my CM in relation to the new turn. Work it in slowing lots of slow wedge turns moving to more parallel.
2.Tip Turns might also help focus to an earlier inside edge. A more 1 to 11 O’Clock transfer of the CM. On groomed flat greens from a traverse lean out over the tips of your skis (like a Nordic ski jumper), while in a fairly comfortable stance make slow patient parallel turns. Let whatever edge engagement you get define the turn. Link these turns together.
Work the whole mess into is own skiing. Just my .02
How did I do?