This is the simplest way to guarantee success with any Content you do: Prep the ending first.
Here’s why:
Suppose you have several errands to run. You need to drop some clothes off at the dry cleaners, you’ve got to mail something, and you need to go to the grocery store. So to save gas and go in more of a straight line, you plan everything so you go to the grocery store last. If you don’t, you’re going to end up with a lot of refrigerated items melting in the back seat while you’re doing the other errands.
It’s the same way with everything on the air – know where you’re GOING. Where the “destination” is. THEN, plan the beginning – how you’ll get into whatever the subject is. You’ll find that the middle pretty much takes care of itself.
Saturday Night Live is a good example. Through the years, they’ve always had talented people in the cast, but when the show was strongest, every ‘bit’ had a sense of purpose – an ending or conclusion that was solid and provided some sort of resolution at the end. When the show was at its weakest, there were still some good ideas, but they just kind of fizzled out at the end.