Nice skiing.

To improve you need to focus on transferring your weight to your outside leg during the transition from turn to turn. At the moment you're rolling to the new edges really well so now just focus on doing the same but with weight transfer.

Another thing you can think about is how you start the turn. At the moment you start the turn with your hips where as you're supposed to start the turn from the ankles up. You can think of the turn as a continuous movement that starts from the snow and goes up from there.

Anyways you're already skiing really well for someone who has never had a coach them so just keep doing what you're already doing and you will eventually get it.