Hi Brando,
I'm going to be really blunt because I appreciate anyone who would love to be a teacher. As an aside, seems to me that most math teachers/ engineers have social problems (my dad was an aerospace engineer). Regarding your comment of fearing others are judging you: Guess What! Everybody is judging everybody! You are placing judgement towards others in thinking that they are even thinking of you. Bottom line is that you are as good as you are each second of each day. We all need improvement in a plethera of ways, nobody is perfect or ever will be. JUDGING on your initial email statement, I would say you are pretty intelligent, you have a passion/spark, you have compassion for others and that in it self is a whole lot more than most people in our society. Don't be so hard on yourself, join an association in your community (in particular, focus towards the age group you want to teach) and make eye contact followed by a smile- you really don't even have to say anything.