Organization and content of the business plan will evolve as it is prepared. For example, if the driving force of the plan is marketing or sales then a preponderance of the analysis and plan_of_action section will be more up_front and sales oriented in tone. With business plan's the world is your oyster; think from the center out to the edges and think outside of the box.
To me a small business is one of the best things you can have if you enjoy operating a business; however, it does require a lot more than just enjoying ownership and running a business. Especially if you are starting a small business and even if you have had a business for many years, you should know what you want for your future. Never guess about your business. You see, without a plan, you are just guessing. We business people work hard and we always continue to hope for the best but when we guess, we're taking a lot of risks. You've probably heard the old saying from an unknown author that says, "If you fail to plan, then plan to fail."