What is the purpose of your presentation? What are you hoping to achieve with your presentation? Is the presentation to inform, train, persuade, entertain, or demonstrate? Being clear about its purpose helps you decide what to include or omit, and what approach to use. For example:

• if the presentation is to inform or explain, it helps to have a logical order and to use examples and analogies
• if the presentation is to persuade it helps to be convincing, use evidence and show enthusiasm.

You must set your aims and objectives before you begin to prepare any presentation and you must also consider your audience's objectives - why do they want to listen to your presentation? What are they hoping to gain from listening to you?