A common thing is that young children learn language unconsciously and naturally. Thus, teaching English lessons for kids is possible as they are already self-motivated and natural acquirers. Kids possess the ability to imitate your pronunciation, so just talk with kids in English casually. They will learn it without stress.
Teach kids through activities such as picking up some role that they know. They will get into the role and start playing it. You can prompt few English words and see the strategy of innate language learning really works. Once your kid’s minds are attuned, it makes learning language easier.