Hanna B

This might not apply in your case... but I might have a strong urge to "talk back" (I don't like the expression either) if the correction is based on incorrect description of how I did the technique. That is fairly common, really. The description of what I did wrong might be exaggerated "for pedagogic reasons" and maybe even showed to me that way. Many people I think have problems recieving this politely - I certainly do. It feels like I am wrongly accused of doing something I didn't.

Unless teachers are willing to spend some time studying what the student is doing, so he/she can adequately describe what he or she is doing wrong, it might be better to just skip that part and focus on how to do the technique correctly. My position is wrong, OK. But being showed a parody of how I stand is not really helpful.