PSA and commercials

1. A commercial is an ad that  make people want to buy the things. And a PSA is an ad that make people do something that you want them to do.
2. 1. Some funny stuffs
    2. For a PSA, make it as serious as possible.
    3. Easy lines that people can understand and remember it easier.
3. The first thing is to always talk and less action because people can't see the actions. And the second thing is to make it as funny or as serious as possible