I’m pretty hard on myself, but this swing isn’t all bad. Except for the standing up, that’s not good.
I feel the rising up now. That’s one thing about taking swings is it builds body awareness. I feel going up through the front leg and up through my toes, going upwards.
I would try swinging across your "face". Your hands pull out and you stand up because your hands are chasing your head as its turning out. A simple keep your head down and facing the tee all the way through finish might help.
Yes, exaggerating holding the posture will help. I’ve done this before, just didn’t do it enough. I’m also using a PVC drill as well. Let’s see if we can correct that bad habit.
I think the lowerbody is better.