Benvenuti EpicSki Ancient!
With respect to North American instruction techniques, one simple way of describing them is: safety, fun and learning. Tommi's skiing is a hit on all 3.
Safety= Helmet, pitch and speed appropriate for skill level, no obstacles that are easy to hit
Fun = is that a smile I see at the end? At the least the body language indicates having fun
Learning = Outstanding steady control of the skis and nice clean arcs in the snow, especially on the right turns. Engaging the new edges above the fall line.
Adie has it nailed when he says the primary objective at this age is fun. Perfecting technique/developing good habitual movements is desirable, but not as important as having fun. There is a lot of room for "automatic" improvement through playing games, making different turn shapes, exploring the mountain, getting experience with different snow conditions, etc.
If I was looking for technical things to work on with this skiing, candidates would be left turn initiation, sitting on the inside ski and using poles. I'd like to see Tommi standing/balancing more against the outside leg through his turns. His left turn initiation is a little two footed (feet change edges at different times) and initiated via upper body lean vs moving from the center. I'd first check for alignment issues. If none found, I'd work on introducing pole touch as a means to facilitate a change. These things have to be tempered against his mental and physical limits as his body changes from the 4-6 stage to the 7-9 stage.
One more comment on "North American" vs European ski instruction for kids. In North America, the sport of skiing is not part of the national identity and very few children focus on becoming elite skiers from a young age. In Europe, there is more cultural pressure to put kids into the meat grinder of race training so that elite skiers can be found and developed. Tommi has the potential to succeed in such a program. The potential payoff is big, but the odds of success are small. Either way, there are plenty of kids who go through racing programs and come out as happy lifelong skiers. It's a choice to consider. If it is something you want to pursue, now is the time to start pursuing it.
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