2 cents from yet another MA hack
Here's what I see (much the same as Rick and PhilT): Good fun energetic skiing, great rhythm, engaging the inside edge above the fall line, smooth pole swing, good pole timing and location of touch relative to your turn shape, centered neutral stance and some very good angulation occurring just after the fall line. That's the good news. I'm also seeing pushing of the outside ski at turn finish (note my references to your turns is off sequence with Rick's description but we're talking about the same thing), upper body movement and sequential edge change during turn initiation.
Let's go to the video tape and look at the good news first.
(note time references use the time code embedded in the video which has a jump from 24 seconds to 1 minute 3, this still was from 1 minute 5 seconds, which may show as 26 seconds in your viewer)
This is very good angulation for this slope pitch and speed. But your maximum angulation is happening slightly after the fall line. We want it to happen a tiny bit earlier in the turn. We'll see the reason why this is late in a bit.
(this is from 1 minute 3 seconds)
The most extreme example of finishing your turns with a down push is that your weight gets so far back that the ski tips come up (see the left ski). This only happened once in the clip, but the up and down movement is consistent in your skiing. What I see is that your weight gets down and back at the end of the turn. You get a brief speed check and the tails start to break away briefly, then you let off with your up and upper body forward move to start the next turn.
(this is the next frame)
The problem is your inside leg can not collapse when the upper body starts the movement into the new turn. Since the outside leg is turning, the result is a wedge.
(the next left turn at 1 minute 5 seconds)
For the finish of the next right turn/start of the next left turn, note that the outside ski is on a slightly higher edge angle providing the brace for the finishing push. This is before the upper body launch.
(this is the next frame)
Can you see the torso leaning forward?
(this is 2 frames later)
Yikes! There's that wedge again.
(this is from the turn from 14-16 seconds)
In this animated sequence, you can clearly see the lateral lean to the inside as the cause of the skis getting ahead and the weight getting back. I left out a couple of frames between steps 3 and 4, but step 4 shows the wedge as the inevitable result again. The wedge provides the speed control to enable the weight re-centering of the upper body coming forward. From there you can finish the turn as Rick has described.
Here's what I want to see:
Parallel skis throughout the turn, simultaneous edge changes instead of sequential edge changes and inside leg collapse during turn initiation instead of upper body movement.
Here's how to do it:
Focus on learning new turn initiation movements in longer radius turns first before gradually tightening into shorter radius turns. With a longer radius turn, you will be able to perform a turn finish with the skis more across the hill or even with an uphill component to the finish. From this position you will be better able to perform a turn initiation move beginning with an extension of the uphill ankle. This will cause the hips to move diagonally forward into the new turn and simultaneously facilitate an inside leg collapse. (Note: The PMTS approach teaches to lift and tip the inside ski. Either focus can get to the same end result).
Exercises that can help:
Tracer turns, White Pass turns, Pivot slips, Skate move to start turns
Traverses where you raise the downhill ski slightly off the snow by only extending the uphill ankle (vs lifting the downhill leg)
Railroad track turns are a good test to see if you own the movements, but my opinion is that they don't give you as much direct negative feedback when you are not doing the movements (although the tracks can show you have not "got it", the turns can still feel pretty good).
Although I've picked on three right turn finishes/left turn initiations, I can see the same problems to a lesser extent in your other turns. I'm not an alignment specialist, but your wedge stills just look odd to me. If I had spare money to bet, I'd say that your left boot could use some canting. Although a change in technique alone can greatly improve your performance, the root cause of your issues could be alignment. Have you had your alignment checked since your last boot purchase? If not, you may find it worthwhile to get checked before you try to change your skiing.