A business plan is a document describing a business, its products or services, how it earns or will earn, its leadership and staffing, its financing, its operations model, and many other details essential to its success.
You can customize the language and detail for them by knowing who is reading your plan. This will help you ensure you only include the most important information and when to cut out sections that don't make sense.
If your goal is to get funding for your business, you will need to do more work and create a detailed plan.
You can spend time researching your customers if there is demand for your products and who sells similar products.
Your business plan should not exceed 15 to 20 pages. Consider adding additional documents to your business plan that may be useful for your audience or your goals as an appendix.
Allow time to edit the plan before it is distributed.