This comes from the series at SPPH:
Going Public with Impact
by Jennifer Gardy
http://spph.ubc.ca/seminar-series/going-public-with-impact-seminars/
I found an interesting tip from Jennifer was to write out your script first – concentrating on your key message – and then go back and start making slides. But there are many more tips in the attached pdf that focus on:
1. Delivering a clear, concise message
2. Creating memorable visuals
3. A confident and authentic delivery
The most important take home message was – of course – Rehearse, rehearse, rehearse!