Nice skiing Miles--worth the half-hour or so it took me to download the file on my dial-up modem. Good ski use, nice flow and rhythm, and good basic stance.
If you want something to work on, take a look at the tendency to square up and rotate your upper body into the turn toward its finish. A lot of it may have to do with reaching forward with the downhill arm, in preparation for the next pole plant.
In any event, note that it coincides with a slight washing out of your downhill ski at the end of the turn. It's particularly visible in your left turns, toward the camera, but it happens in both, consistently. This is the notorious "abstem" that almost inevitably accompanies getting rotated. What happens is that the reach with the arm pulls the hips out (downhill) slightly, interfering with your edge control enough to cause the tail wash. This tail wash finishes your turn, whether you want it to or not, and requires you to set the edge (which happens once it washes out enough to create enough angle) before you can get into the next turn.
To your credit, you show very little rotation of the upper body INTO the turn--a common error that also usually results from (and can cause) rotating at the turn's finish.
So think of "driving" through the turn with your upper body, as you do, but avoid rotating your shoulders along with it. Steer the turn with your legs all the way through to its finish--wherever you choose that to be--and make sure that your entire body is in "neutral" at that point. Your control over your turn shape, ability to complete a clean turn farther around (if you choose), and smooth linkage into the next turn will all improve!