Just googling around looking at tips to improve my presentation skills. Came across www.whyhowproveit.co.uk
The suggestion is a four stage approach.
1. Key Message - Leave your audience in absolutely no doubt what you came to tell them in a succinct way
2. Explain to your audience "why should I do that?"
3. Explain how they can do it (this is examples, and actually the least important part of the presentation)
4. Use personal examples, case studies and statistics to prove you are talking sense.
WHPI - seems like a good way of focussing the mind when preparing.