Article in English: Before you tell one of the jokes you've written, think about who your audience is. This will help guarantee that they understand your joke and increase the likelihood of laughter. A group of elderly people probably wouldn't get the joke about Justin Bieber because he is a young pop star with a very young fan base. You're less likely to offend someone if you know your audience. For example, it's probably not advisable to tell the joke about “battered women” to a women's group. Think about what facial expressions or gestures will enhance the set up and punchline(s). Drawing pictures is another effective method to help your audience understand your joke. These visual cues will do the same for your audience and make them more likely to laugh.  If your audience doesn't laugh you can make a joke about that or move on to other material. You can always revise the joke for future use. Remember that even the best comics have jokes that fall flat. John Stewart, Jerry Seinfeld, Bob Newhart and others aren't funny all the time.

Summary in Vietnamese:
Xem xét đối tượng khán giả. Chú ý tới cử chỉ, điệu bộ. Hãy tỏ ra tự tin, tự nhiên và biết tùy cơ ứng biến.