A business plan should be detailed. In listing your products and services for example, you should not really stop by just enumerating them. You also should write down the descriptions and scope of your products and services, touch base on production and identify means on how you can market your "brain - child" to your targeted niche.
Industry overview-This section will include description about which industry you are targeting, its growth and size, competitive analysis, business strategy and key players.
An exit strategy- A business plan becomes perfect only when you write a good exit strategy for the investor. It is important to note that investors generally have a 3 year horizon within which they want to exit. The author is the partner at IntelligentQ. IntelligentQ specializes in Integrated Marketing Communications: Business Content, Sports Content, Business Plans.
Finally, a business plan should be error - free. This is important because your business plan defines who you are as a business person. If it turned out sloppy, then that does not speak too highly of you.