To get buy-in from stakeholders on your business case, you need to tell a compelling story in a way they’ll understand. To create a winning presentation, find out what past presenters have done. This will give you ideas and a sense of what stakeholders may expect.
Reach out to co-workers who have recently developed business cases and ask to see their documents. Get at least three or four cases that were approved so you can identify similarities. Did your colleagues use PowerPoint or Word? How did they describe the business need? What kind of data did they include? Get your hands on a few rejected cases, if you can, to see what their project leads did differently. Did they fail to address risk? Were their documents too long, or not substantial enough? You’ll learn a lot about what not to do.
Adapted from the HBR Guide to Building Your Business Case eBook + Tools.