Your purpose is to make your audience see what you saw, hear what you heard, feel what you felt. Relevant detail, couched in concrete, colorful language, is the best way to recreate the incident as it happened and to picture it for the audience.
Dale Carnegie (November 24, 1888 - November 1, 1955) was a pioneer in self-improvement, salesmanship, and corporate training programs, and became famous for courses he developed that emphasized public speaking and interpersonal skills. Born in poverty on a farm in Missouri, he was the author of How to Win Friends and Influence People, first published in 1936, which has sold over 15 million copies through many editions and remains popular today. He also wrote a biography of Abraham Lincoln titled Lincoln the Unknown and several other books.