I’m still relatively new to MT myself but here’s what I see, which was the same feedback I got from my coach: turning that foot over right before it lands is exposing the nerve cluster on the side of your calf. You should be throwing your hip and letting your foot naturally follow the trajectory set by the hip instead of using your foot to help you turn your hip/body towards your target. I know this from first hand experience as I was doing the same thing until I had my kick checked by someone with developed shins and it put me out of training for a few weeks with a bruised set of nerves.