1) Listen and collaborate with others
Collaboration is nowadays a highly valued business strategy. It is clear that working together leads to better ideas. Try to seek out differing viewpoints: that is the best way to be better prepared for your presentation. A winning proposal is one that persuades.
Even if you disagree with someone, careful listening will allow you to absorb information. Then you can better handle the remarks and objections of others.
By listening well, you will clearly understand where the problem is. Furthermore, your audience will feel included. So ask for opinions and objections too. The chances are that you will craft something new together, which you were not able to see before.
2) It is also about what you do before the presentation
Sales professionals would tell you that an audience has often decided whether to purchase or not even before the presentation starts. Remember this: the decision is frequently made before the meeting.
That means you need to gain commitment from the stakeholders in your audience well before the presentation itself. So it is essential to recognise who the most important stakeholders and influencers are.
You also need to know their opinions and attitude towards what you are offering. So speak with those people proactively and work on gaining buy-in from them.
-jk-