There is a variety of ways and techniques to make an effective presentation. Here are some good guidelines that you need to consider.
Firstly, you have to know your audience; you must ensure that your presentation is targeted on the audience. For example, if you a give presentation for your customers or for current clients at a convention, you need to make them interested in what they are expected to. That means you give a presentation on what the audience need, not what you want to present.
The next thing you should pay close attention is that the venue is also important in contributing to the success of your presentation. The venue is a place where your presentation will be taken place. The venue also tells you what kind of presentation you will give, casual or formal presentation and where it is made, outdoor or indoor.
In any formal presentation, in order to be kind of professional, you probably need to use multimedia equipment, computer, overhead projector, and PowerPoint software for your presentation. However, you have to make sure that your multimedia equipment is compatible with your laptop and double-check or reconfirm their smooth run before presentation.
You also need to be concerned about your body language that you deliver your presentation to audience. Your hands are also important as to where they are put. But usually you should not put your hands near your face since you need your audience to be able to see your face. Maybe, everyone in the room does not speak English at the same level and they need to see your mouth move as well. In addition, your body language should not be distracting as your audience want to pay attention to your presentation not your body.
One more thing you should avoid is colloquialisms because sometimes in English, you should not say things that certain people from certain countries can understand but you want all your audience to understand your entire presentation.