What is the key issues of communication?

Be nice and polite.

1 : You have to look and smell good.

2 : You have to feel confident when you're speaking.

3 : Know what you are saying. Make sure it makes sense and relates to the topic.

4 : Don't say ahh, or just don't repeat some of the Words over and over when you're thinking.

5: Make sure your teeth are clean and you have fresh breath.