Don't be slangy.
Don't antagonize.
Don't be awkward.
Don't be violent.
Don't be personal.
Don't be "funny."
Don't attitudinize.
Don't be monotonous.
Don't speak rapidly.
Don't sway your body.
Don't be long-winded.
Don't "hem" and "haw."
Don't praise yourself.
Don't overgesticulate.
Don't pace the platform.
Don't clear your throat.
Don't "point with pride."
Don't tell a long story.
Don't rise on your toes.
Don't distort your words.
Don't stand like a statue.
Don't address the ceiling.
Don't speak in a high key.
Don't emphasize everything.
Don't drink while speaking.
Don't fatigue your audience.
Don't exceed your time limit.
Don't talk for talking's sake.
Don't wander from your subject.
Don't fumble with your clothes.
Don't speak through closed teeth.
Don't put your hands on your hips.
Don't fail to stop when you have ended.

DO'S FOR PUBLIC SPEAKERS

Be prepared.
Begin slowly.
Be modest.
Speak distinctly.
Address all your hearers.
Be uniformly courteous.
Prune your sentences.
Cultivate mental alertness.
Conceal your method.
Be scrupulously clear.
Feel sure of yourself.
Look your audience in the eyes.
Be direct.
Favor your deep tones.
Speak deliberately.
Get to your facts.
Be earnest.
Observe your pauses.
Suit the action to the word.
Be yourself at your best.
Speak fluently.
Use your abdominal muscles.
Make yourself interesting.
Be conversational.
Conciliate your opponent.
Rouse yourself.
Be logical.
Have your wits about you.
Be considerate.
Open your mouth.
Speak authoritatively.
Cultivate sincerity.
Cultivate brevity.
Cultivate tact.
End swiftly.

POINTS FOR SPEAKERS

As far as possible avoid the following hackneyed phrases:

I rise with diffidence
Unaccustomed as I am to public speaking
By a happy stroke of fate
It becomes my painful duty
In the last analysis
I am encouraged to go on
I point with pride
On the other hand (with gesture)
I hold
The vox populi
Be that as it may
I shall not detain you
As the hour is growing late
Believe me
We view with