The summary.
STATE WHAT YOU WANT THE AUDIENCE TO TAKE AWAY IN ONE SENTENCE
If you cannot, the talk has no purpose yet. Then three or four supporting points, no more — audiences retain very little.
SLIDES SUPPORT WHAT YOU SAY; THEY DO NOT CONTAIN IT
An audience reads faster than you speak, then stops listening.
Put everything you intend to say in the notes, and test readability from the back of the room.
REHEARSE ALOUD AND TIMED
Speaking it is different from reading it silently, and reveals what does not work.
Know your opening precisely — the first thirty seconds are where nerves are worst.
SPEAK MORE SLOWLY THAN FEELS NATURAL, AND PAUSE
Nervousness accelerates speech. Pauses let the audience absorb and make you appear composed.
Nerves are not visible to the extent you imagine.
WHEN YOU DO NOT KNOW THE ANSWER, SAY SO
It is respected. Bluffing is usually obvious and is not.
TITLE A CHART WITH THE FINDING, NOT THE SUBJECT
And state limitations honestly — it strengthens credibility rather than weakening it.
EXPLAINING TO NON-SPECIALISTS: ASSUME INTELLIGENCE, NOT KNOWLEDGE
Invite specific questions. People say yes to "did that make sense?" regardless.
