If you want people to invest in your idea, then my best advice is first write a business plan, and keep it simple. Don’t confuse your business plan with a doctoral thesis or the back of a napkin. Keep the wording and formatting straightforward, and keep the plan short. For minimum content, see my original article “These 10 Key Elements Make a Business Plan Fundable.”
Keep It Simple
The overriding principle is that your business plan must be easy to read. This means writing at the level of an average newspaper story (about eighth-grade level). Understand that people will skim your plan, and even try to read it while talking on the phone or going through their e-mail.