I’m confident in front of a crowd, I can tell a great story, and I’m no slacker with Prezi—so I’ve always considered myself a relatively good presenter.

Then I stumbled across this infographic, which completely disabused me of that notion. You’re not supposed to use bullet points. (I did.) You should outline your ideas on paper before ever moving to a screen. (I don’t.) You should never make your font size smaller than 30. (I do.)

If you’ve also been committing these cardinal sins of presentation-giving, don’t worry. The past is the past, and now we know the drill. So check out the infographic, and join me in becoming a flawless presenter.

Photo of projector courtesy of Shutterstock.