Well, in my personal philosophy you are partially right. You can self teach youself, a punch is a punch and a kick a kick, it is not however a wise decision to self teach youself and say that is it or pass it off as if you are a qualified person to teach that art. Trying out the moves, watching how to videos are good things to me. Fine tunning is needed by a qualified person though. I started out self teaching myself and my instructor said it was to my benifit. What do you think?