Hi Greengrass,
Good fluid willowy swing but what I notice straight away is the difference between your practice swings and your hit the ball swing. You get in good position at the top but when you hit the ball you hit from the top with your right shoulder clearly coming over the top. The practices swing you come down nicely on the inside. Don't know how you manage to hit a draw with that shoulder action - your hands must work overtime.
If this makes sense to you, you could try starting the downswing by dropping your arms down on the inside as your hips turn whilst your left shoulder and upper body holds firm towards the target momentarily ,rather than spinning to the left as you cast from coming over the top.
but what do I know - other than you may start hitting a big hook - so you will need to quiten your hands down too