Was looking at this the other day, definitely seems simple and effective enough.
The wrist cupping is probably cause I'm nursing a right thumb injury. My grip has always been strong but never quite on that level. I was a bit appalled when I saw that on video. In terms of over swinging, I don't think so. According to the Mizzy shaft optimizer I swing my irons about 88-90 mph which is about 80% of my driver so I guess that's about right. And hip slide, absolutely. It's not as dramatic as it used to be though. Glad to see progress in that area though.
Good advice. I definitely see what you're saying with the right elbow.
Yep. Definitely agree.
Good stuff. I agree with all that too. The over cocking in the back swing will definitely improve when I correct my way too strong for my own good grip. I just compared my swing to the 3 points you showed. 1st frame, I seem to be okay. 2nd frame lol no. way off. 3rd frame wayyy too steep. Possibly standing too close to the ball is causing that. Anyway, great advice. Got stuff to work out now for sure.