English teacher who teaches spoken english to all ages

I am 34 years MBA Marketing travelled and worked in multinational companies across gulf and far east. Working with different nationalities automatically makes English as the defacto language and when you work with different nationalities, you learn to grasp their accents, tunes, jurgens, and all kind of different aspects of english as per the nationalities. Having this kind of experience and lately working as freelance financial analyst where we regularly communicate in english, i felt there is an unexplored opportunity for myself as english speaking teacher because i love learning and understanding english.