How to be good public speaker

Speak from the heart.
Don't be clever.
Don't mislead.
Don't tell a lie.
Keeping informing.
Avoid monotony.
Give surprises.
Give pause.
Be sincere. Be pleasant.
Apply genuine sense of humor...
Never underestimate the audience.
Redefine your style of presentation according to the profile of the audience.
Finally, be optimistic.
Be enthusiastic, as enthusiasm spreads like wild-fire.
Start speaking today...
It needs a lot of practice...
God bless...