Where have you studied? What have you done? How are you qualified to teach? What are you going to teach? If you can't answer these simple questions with something more than a vague statement about "teaching a lot of things" why should anyone believe you or trust you? No offence, but it makes you sound like someone who knows nothing and is trying to make himself out to be something he isn't. Perhaps you should give more thought into your presentation. Build some rapport with people, give examples of your education and experience, and show that you are someone worthy of studying under. Then, maybe, people will take you more seriously. Just some advice.