in public, it can be very useful if you ask those present to give
their opinion on how the speech went.
to try and look for sincere, objective opinions in which people
point out the strong points and areas that need improving.
It is also
a good idea to record the speech.
will allow you to analyze carefully all of the aspects: voice, language,
gestures, movements, enthusiasm, security, etc.
to be rigorous in the analysis (although you must not over criticize)
and detect the mistakes that you have made, their possible causes
(lack of practice, unforseens, nerves, not knowing the material
very well, etc) and see the possible measures to adopt to avoid
them happening again.
need to analyze the naturalness and fluency shown as they are key
aspects to capture the public's interest.
have used support visuals you need to value what they were like (if
they have enriched the speech, if they have helped capture the public's
attention, if they have been used with confidence, etc).
It is also
very useful to speak to experts and ask them for advice.
you speak in public it will be the general rehearsal for the next
occassion, and in each one you have to try and avoid committing the
same mistakes as you did in the previous one.
only correct these mistakes if you know what they are.