It looks to me like you are not really taking a swing, but more like trying to push the ball to the direction you are trying to send it. You seem like you are just tense the whole time.
Take a look below and compare your positions to Fred Couples one of the more fluid hitters in the game.
The first thing I want you to notice is the position of your right arm at the top of your swing. It's almost like you are trying to keep it tight to your body on purpose. Look at Fred and the 90 degrees that is formed at the top of his swing? The next is look at your position at the end of your swing and where your hips are pointing and compare it to Fred where he completely just lets it go and momentum automatically takes him to that position.
What I think you should work on for starters (and I am no expert, just speaking from my own experiences), I want you to feel what a real swing feels like. So, just flip that driver around and I want you to whip it like a whip and I want you to hear that swoosh sound of the whip. Forget the ball, just try and make that snapping swoosh sound while holding the driver backwards. just forget about mechanics and everything that has to do with a golf swing and just try to make the loudest sound possible and then try and make a louder sound with the next one. Just see how that feels and then I want you to compare it to your swing now and the sound you are making. Let me know how that goes and we can discuss.'