4. Choose Your Medium.
Carrying on from speaking their language, present your idea in a way that will work for them.  If these are people who value numbers, use a spreadsheet, if they're visual use graphics and images.   You want to grab 'THEIR' attention not your own.

 

5. Be passionate.
Passion is not about pushing, its about energy and verve.  You're not out to force your idea on them, you're out to make them think its a brilliant idea.   And with your passion take a little confidence.  You've thought out your idea thoroughly, you can answer their questions, its a great idea, and you had it!