Running a powerpoint presentation is not presentation skills
Wearing a tie or a suit is not presentation skills
Having the audience just clap on a couple of punchlines is not presentation skills.
Its a lot more than that. In my entire 4 years of graduation I have given several presentations and have come to learn that Presentation Skills is a combination of your emotional connect with your audiences, your own character and the content you bring with yourself. How do you bring that with efficiency while ensuring the external factors are covered too that definitely calls for visuals and your strong presence.
Learn some of it in 30 minutes and then whoever wants to have more of it, could request to enrol in a further detailed program related to these.