Below is the article for you to have a read through. It includes some great tips for speaking in public for the first time or facilitating a presentation or workshop. Public speaking really is a skill to pay attention to developing, if it's something that is required of your role.
There is also a lot more information about effective body language when presenting (in other articles) and the work of Amy Cuddy, which is very useful. Amy provides some powerful poses to do prior to a speaking engagement, that can alter hormone and mood levels, thus making you feel more confident and focused while presenting or facilitating (her video presentation is posted below). Amy is not an expert in speaking in public, so personally I take away her insights about body language and use it in life and work in general.
And I absolutely agree with number 5 on the inc.com list, you are there to serve others, and if you take time prior to speaking, before it formally commences to chat to some of the participants, this can make you feel more comfortable, as well as let them see the human side of you and connect with you as a speaker more.