Fellow speaker,
World Champion Speaker Craig Valentine says you need to internalize, not memorize. This means you know your speech so well it is second nature to you. To help you internalize your speech, read your speech out loud every day for a week. After a week, do your speech once every day without looking at your speech notes. Compare what you said to what you wrote and make a mental note of what you forgot (without redoing your speech). Continue to do this every day.
Internally,
Tim
