I used to be shy a bit when approaching, or performing, which really affects your performance, as well as the mind of the spectator. When I got into my teen leadership/speech class at school over a year ago, I really started to open up, and became confident. My point is that being nervous, shy, or anything like this can affect your performance in a negative way. When I see Danny Garcia occasionally, he tells me about my body language and speech, mumbling is commom, saying "ah, umm, ugh" is common, and when pointed out, it shows how negative it is to a performance. Also, shifting your body from side to side looks bad. I'm really gklad I have good people to help me and correct my magic. =)