Speech coach Jeremy Donovan suggests you make clear how important your points are. If you have a very important point to make, take longer to make that point. For example, if you have two points and your second point is most important, take 5 minutes to make the first point and 7 minutes to make the second point.
Pointedly,
Tim Wilson
Professional Speech Coach
Free speaking tips at: http://speakingquicktips.blogspot.com