What I see:
Very good tempo and solid foundation. Nothing looks rushed and everything is fluid...until you get to your downswing. Now, your power step and slide is great. You have good balance and are pretty quiet at the line (no head jerking, no instability with your legs).
Here's your problem - it looks like you're pulling the ball through your downswing which makes you come out of the side of the ball, almost topping it. I took some still shots of your video to illustrate:
Shot 1 where you crossed over:
Shot 2 where you went flush on the nose and left the big 4:
Shot 3 where you had a light strike:
Shot 4 where you left the light 7:
In all 4 of these, you can see your hand coming out of the side and top of the ball at your ankle. In the last 3, around shoulder level, you're still behind the ball. The first one, you're starting to come around the ball around your shoulders. In the 4th one, the first image shows where you want to be throughout most of your swing - behind the ball.
From what I can see, you mainly need to work on getting around the ball later. Again, this suggests you're trying to "make the ball move" instead of just letting your hand come through the ball. It's simple in theory but hard in practice, but just try staying behind the ball until the last second and then allowing your hand's natural movement to get you out of the ball. See what happens.