When you reach the conclusion, announce it. You want your audience to pay extra attention. Audiences know that you will now summarize what you’ve said, and they can catch anything they missed earlier.

Once you’ve said “in conclusion,” you have about a minute before you must stop talking. Audiences grow hostile to speakers who promise to stop but then don’t. In the remaining minute of your presentation, fix in the audience’s mind the one or two ideas you want them to remember or take away from your presentation.