How do I become a Teacher?

I become a teacher by first becoming a student. I need to learn from the best and the worst. I need to pull everything I have learned and put into a structure that will best fit my classroom. I become a teacher by passing tests/certifications and working well with my peers. I have learned all of this so far this year. We have worked a lot on the subject. We have learned about and taken the Praxis exam.  We have worked in groups for both in class discussion and our schools. I have had good and bad teachers and already that have taught  me a lot. I have also been hands on with mentoring at the middle school. I think my biggest question for this would be: How exactly do you build up the confidence to teach kids?