If an online business, you need to go into detail how you will attract customers to your website. General statements will contribute almost nothing to helping your cause unless you have detailed statistical analysis of tests you have conducted or of another similar business you have been associated with. If you do not have any data upon which you reference your estimates, it could show lack of proper thought to the remainder of your business plan.
This provides the overall direction of the company by establishing high-level goals that will be achieved by tactical initiatives. The overall plan should be 1 to 3 years with measurement mileposts monthly, quarterly and annually. While the plan is put in place at the onset of the year, it should be constantly re-forecast with actual results throughout the year.