Non-native speakers can teach English abroad and online. The key is to be fluent. In the lessons I use natural language ( tone and pitch) and attach meaning to what to say with actions, pictures and objects.
I use vocabulary building as an important component of any English class.
I do my best and share with my knowledge. I know that every student is unique and has different perspective on life, with this regards teaching English as a second language is an exercise in care of others.