so? as i said, it is not about "mistakes". If I do nothing at all I dont' make any mistakes. Does it mean I am dancing better if i am just standing there? Define a mistake. The things I am working on eveyr day are the same things i have worked on from day 1. Footwork is not a goal, footwork is part of the means... correct footwork should be a result of the correct actions in the body. If my weight is in the right place at the right time, i will have no choice but take a heel lead, or do a toe on outside or inside edge of the foot, etc. Bronze level beginners usually do not achieve the swinging action and therefore can achieve the "footwork" by step by step placing their feet "correctly". Couples in the middle level are striving to achieve the correct action in the body. swinging (or other actions) mean that at some point you are not in control to pick up and place your foot, because you are involved in one long action that determines the steps. in this case you are not in control to pick up and place your feet correctly, and often you might make "footwork mistakes" when something does not go as planned. But the action you are doing is a whole world more correct than what a bronze beginner does... the top couples of course have trained their actions to perfection, and therefore their actions correct actions also always result in correct footwork. I have not seen wrong footwork from Alessia Betti or any other top lady or man.