Are you sure you've never taught anyone? Have you shown someone how to use a computer? How to play a golf stroke? How to cook a burger? How to put oil in a car? More importantly did you enjoy it when they learnt from you? Basically all you are doing is showing somebody how to do something, letting them have a go then telling what they are doing wrong, or right as the case may be. Teaching is great, don't worry about it. All the stuff that comes with the FI course is more to do with standardising what is taught. There is also an emphasis nowadays on 'how to teach' but when you find yourself being told to 'look the other person in the eye when you speak to them' you can't help thinking there's an American (bless 'em) influence creeping in somewhere
.