characteristic for a great speech

As much as necessary,
as little as possible

No smalltalk

Beginning and Ending important

Repeat important stuff but not too often

Create a arc of tension

Include the crowd

quiet

listen carefully

work with orator

standing ovation

gestures

facial expression

show emotions

eye contact

appear self - confident

Use your space (don´t just stand
one point)

speak freely

Vocal emphasis

good speed (audience can follow)