What you have is a clearly great skier. Think examiner level. You watch this skier ski a series of almost perfect dynamic short radius turns down a steep groomed run.
Besides realizing that this skier has great balance, great separation of upper and lower body, great leg steering, disiplined hands, etc, those turns are the kind of turns we are all aspiring to attain.. You still need to do MA on this skier and find something to coach, to help them attain a little more in their skiing.
What clues are you looking for? What visual cues?