Good Presentation
First,to make a good presentation the speaker should prepare the order of presentation because it makes it comfortable to read and easy to understand.
Second,have good energy and smile to your audience because listeners will be about your speak and have interest in you.
Third,give hand out to your audience because so that listeners will have more information about the presentation.
Bad Presentation
First,a bad presentation is don't stand with your back to the audience because will be sound lower and the listener not know what the speaker is explaining.
Second,don't read directly from your notes because it show that the speaker don't have knowledge about the presentation.
Third,inappropriate clothes such as,skinny,pajamas and casual wear because it's impolite and presenters must wear appropriate clothes.
