Drama Teaching Advice

Hello, Looking for advice or help about becoming a Drama Teacher. I am a qulified Primary School Teacher looking at changing paths to Drama Teaching. It does not have to be teaching Drama in the clasroom, I am very much interested in after school confidence-building Drama classes. I attended Helen O'Grady Drama Academy as a child/Teenager and I was also very involved in High school Drama classes & productions. Do you have any info for me about what I would need to do to be able to teach Drama. What qualifications would I need? Do you know of any Courses, Classes, workshops I could attend??? Thanks Nelly Perth WA