I have experience with young learners, teens and adults.
I have taught English using the Cambridge method and also another method more speaking and listening based.
I believe the best way to learn a language is practice speaking and to incorporate grammar in a way that is not so highlighted.
Depending on the type of English (business, general, etc), playing games is a fun way to practice. - grammar games - practicing prepositions etc.
Creating a good rapport with the student is important for them to feel comfortable and excited to learn.
I believe a good teacher is always prepared and inspires students to always do better.