I only have a ADN but I am interested in teaching the CNA class.

I am wondering what degree and experience I will need to teach the CNA classes. I have been a nurse for 7 years. 3 years in GI nursing, almost 4 years in pre/post op nursing experience in an ambulatory facility. After I graduated from nursing school, I did a 3 months internship on the med/surg floor. I am good at training people and helping people to memorize stuff. I know I will make an excellent CNA teacher. I am wondering what I have to study to become one?