I watched your video (about 5 times) and can say only 2 things.
1) How wide d'you want to go, your left arm looks bolt straight to me and you're cracking the ball like a man possessed. If you want to get maximum width, take the club back to 9 o'clock and get your hands as far away from your right pocket as physically possible.....that's it....
i.m.o. a swing will look wider if you cock later (Lorena Ochoa), and narrower if you cock earlier (Nick Faldo).
2) If you want some help with take away, could you film it straight down-the-line?
i think it could be your left leg.. i did the same thing that you did ! so what i did is that i keep my legs still i don't move them at all and i just swing then i put the weight through the ball and i can hit it much better now !