As long as you say something reasonably intelligent (you have a well thought through arguement), what really matters is your delivery. A few pointers for presentations:-1. The basics - keep it to around 1 slide per min. As the old saying goes, 'tell them what your going to tell them, tell them it and then tell them what you told them.'2. Strive to make your presentation SIMPLE yet COMPELLING. Is there a new angle of the case study you can focus on? Do you have some insight that others may not have considered?3. Avoid the use of statistics - make any figures humanly quantifiable. Eg. there are 12 billion golf balls on the planet, thats 2 for every person in existence. 4. This is an opportunity to sell your self. Tweak your presentation to exploit any specialist knowledge you have. 5. Body language - HANDS OUT OF POCKETS. Remove all coins from your pocket before you start so you can't fiddle with them. Don't move around too much, but don't stand there straight as a pencil. As you introduce your presentation, try taking one step forward and giving an open gesture. This helps you gain some authority and shows the people in the room that you are confident in what you have to say.I hope this is of some use.