I was at the Louvre in 2004, 2005, way before smartphones and people were crazy with the digital cameras in front of the Mona Lisa. It has always been pandemonium there, now it's just smartphones instead of digicams. Signs said no flash photography and people were flashing away. It was a total turn off back then, nothing has changed.
Appreciate it, and welcome to TST, but the note in this section of the forum warns about how practice swings are really not very helpful. People do all sorts of different things with their practice swing than in their real swing, hitting a ball.
That said, I'd really look at getting some more depth with the left arm and the hands during the backswing, and then worrying about that steep and through-to-the-left downswing.