If your words cannot easily be easily understood by your audience, this will alienate them.
I have a native RP/Received Pronunciation ‘accent’ -otherwise known as Standard British English -this is the ‘accent’ learnt in drama schools and universally. (BBC Newsreaders often have this clear English accent).
Studied pronunciation (phonetics, etc) during an Acting MA and have taught it for over fifteen years.
Classes can take place in person or on Skype, the phone or FaceTime.