Let's make this fun, shall we?
find skiers who are doing what you want to do. Ski with them, watch them, copy what they're doing.
Here, dance with Mikaela. Left hand holding her right hand, right hand on her waist, to the music of your choice.
Same with this one, but at 0.25 speed, which can be done on YouTube on a desktop,
Thank you Eric Harbour for filming! Thank you Mikaela for the dance!
Continuously keep your head and pelvis the same "distance" off the snow
keeping the torso upright
Ok, so you are dancing with no less than Mikaela, so do it right. Dance like Craig,
Watch his belt. Always level with the dance floor (the slope). It's level even when the leg (outside leg) is extended. Obviously, he doesn't have the benefit of (centripetal?) force to allow his flexed inside leg to go to the side. But, belt level.
And, yes, keep the torso upright and disciplined throughout. Notice the shoulders, particularly hers, Joan's, and Mikaela's. It's like they are standing on roller board, not walking or stepping. I also like the steadiness of this lady's shoulders,
To dance like this, there is a presumption of one being able to balance on one foot or another or both. You obviously can already do that on skis. Use that and dance.
And try this. Do, four lazy, less disciplined turns. Then do four as if you and Mikaela were in a dance competition. Once you've got that feeling, like you can dance, then onto the next thing. And, before long, pains in S's will be a graceful dance.
Disclosure Statement: This is offered up by a Level 1 who can't get Wedge Christies right, and past Ski at Skill Level.