A good business plan is used to attract funding from investors. Most investors will look at a business plan as a decision-making tool. There are certain things investors look out for in a business. These include one's management team, every investor will want to know a business owner's managerial skills, passion, and his dedication to his business. A comprehensive description of how one's products or services should be discharged, his customer base, his market and financial analysis. A business plan should have a realistic financial forecast. Every investor will always like to see his business associate's return of investment, cash-flow and break-even analysis. Hence, a well prepared business plan is the key to attracting investors.
So how would you go about making a plan like this? Well if you know a fair amount about business, you can. It will take some special calculations and some work but if you know how to put together a Profit & Loss Statement, you can probably do it.