Hi my name is David.
For me a teacher is a person with information, for me all persons are a teacher, because all people have information and the information is very important to improve in anything topic.
My opinion of language teacher is so the best teacher is the street and speak with native speakers, becuase you don't learn a language sit in a classroom, you're learn in the street talking with the people.
Take care and see you later.
Bye bye.
Your friend David.