Anne Fournier wrote:
but rather because the instructor kept accusing me of not doing the proper motion 'on purpose'. His tone wasn't friendly and I felt I was unfairly accused
I agree wholeheartedly with almost everything in this thread, but just wanted to add explicitly something which is in the subtext: you'll definitely know whether you want to train at a place based on the energy or "vibe" you get there. If I walked into a place where the instructor was like the one you describe above, I would walk right on out. As everyone else said, don't worry about the physical details - all of it will benefit you one way or another. The real question is "do I like and respect the people I'm training with, esp. the instructor?"