A standard business plan includes an executive summary, company description, market analysis, organization and management structure, product or service description, marketing and sales strategy, and financial projections -- lenders and investors expect this structure because it lets them quickly assess the opportunity and the risk. The executive summary, though it appears first, is usually written last: it is a concise (one to two page) overview that must hook the reader with the problem, the solution, the target market, and the ask, since many readers decide whether to continue based on this section alone. Financial projections should be realistic, not optimistic -- showing assumptions clearly (unit prices, expected sales volume, cost of goods) so a reader can judge whether the numbers are credible rather than just trusting a big headline figure. A business plan is not a document you write once and file away; it should be revisited and updated as you learn more from the market, making it a working tool rather than a formality.