The STAR approach to delivering a powerful opening/introduction for your presentation:
S- Shock: Say something shocking that will grab the audiences attention (but make sure it is also appropriate for your audience or may not be well received)
T- Tell-A-Story: A story or case study with a previous client makes a good story when you are looking to pursuade or sell something
A- Ask a Question: Check in with the audience first (you can do this by simply asking, "is everyone doing well today?"). Ask a yes or no question so that it is easy for the audience to respond.
R- Recite a quote: Make sure it is applicable and relevant
You should use one or more (but not all) of the STAR methods to grab the audiences attention.
