carver_hk, I watched the video before I read your posting so I thaught it was you skiing! Interesting because I see similair movement patterns.
Anyway, great skiing for that level by your friend. He needs to work on some things but dont we all. Nice flow and I especially liked his relaxed and patient round turns. What stands out is his short turns starting at -2:25 where his technique seems to work best for him.
So, lets look at his technique. 2 things.
1: He starts every turn with a small up-movement. If you look at him in the gates you see it clearly. There is a small up-movement followed by retraction. If you look at his gate skiing and spot that movement and go back and look at all the other clips you can see it in all his skiing. The reason I think his short turns are great is because that kind of up/down movement sits naturally with skiing like that. In fact, you cannot see as much up/down movement because of ski rebound and quick edge change with his feet doing most of the work.
2: He parks and rides. In all his clips you can see it. Even in the short turns. He settles into a static position tipping his head towards the outside. The head tipping is not bad in itself but it should be like all other movements: a gradual movement that starts at cero and moves into max and then back to cero again. Included angulation and upper body counter. I would like to see more dynamic movements. Annother thing conserning "upper body counter" is a bad tendency to over do it insted of angulating. Braking at the waist and hanging towards the outside is a bad habbit. It should be done in combination with angulation othervise you will end up in a heavily antisipated position with your upper body facing down the hill, not a bad thing, but as you make your transition and get going on your new edges in the upper C part of the new turn you suddenly need to invert the counter you had in the previous turn and that will require a quick 90deg rotation with your upper body in the opposite direction uphill. From downhill to uphill. Insted you should keep your upper body facing down hill and ski into counter as your skis come arround through the fall line. This is the reason you should be gentle on your upper body counter and especially if you make big turns you should be more square. In short turns it works the other way arround, upper body facing the fall line and legs crossing back and froth underneath.
Funny the person in the coloured skiing outfit. Not sure if that is a male of female but check out the up-movement at edge change and retracktion and flexing all the way through the turn. This is typical old school skiing but the person is dooing a great job at it. I in particular like the gate sequenze....
! Keep it up and get more milidge, both of you.