If you don't already have a feel (talent) for this...you MUST develop an ability to break a topic down to a very small bite of info and humor, remember though you're writing an 'act' the act is made up of moments, just moments with a precise beginning and ending. Why?.. so that your listeners (audience) will stay with you. What is the definition of a person who uses too many words and never gets to a point? A bore. Don't be boring. An audience can forgive you for many things, but not being boring.