4. Use the ‘sandwich’ technique
Think of your presentation as a sandwich with two slices of bread (introduction +conclusion) and the cheese in the middle (main part). The ‘sandwich’ strategy means that you have a connection between the beginning and the end of your talk. If, for example, you start telling a joke or (funny) story in the introduction, stop at an exciting moment and move on to the main part. Then finish the story/joke in the conclusion.