World Champion Craig Valentine suggests you use the space in the middle of your story to build in humor. When you come to a middle place in your story where you are building in a new story element, look for humorous openings you can use to fill in that open space.
Openly,
Tim Wilson
Professional Speech Coach
Free speaking tips at: http://speakingquicktips.blogspot.com
Twitter: @PblcSpkngLibr