Yeah, not keeping the shoulders level throughout the motion, but actually not shrugging or tightening up the front shoulder when throwing.
And yes, looking back, I was told in many posts not to do that and watched some videos, where that was pointed out, but it took those hammer drills with primary focus on this issue to realize what it means. Even if somebody had broken into my house in the middle of the night, woken me up and told me not to do that, I would not have gotten it until now. Yet, I must figure out, how to throw correctly, but recognition is a step forward.
And yes, looking back, I was told in many posts not to do that and watched some videos, where that was pointed out, but it took those hammer drills with primary focus on this issue to realize what it means. Even if somebody had broken into my house in the middle of the night, woken me up and told me not to do that, I would not have gotten it until now. Yet, I must figure out, how to throw correctly, but recognition is a step forward.