I teach that you should seek to learn from competitors; obviously never copy another business's idea or what they are doing, but you can absolutely learn from their mistakes or see what they are doing and discover ways to improve it. All of that analysis belongs in your business plan: make sure you have your competitors under the microscope and make sure that is a solid chunk of your plan. That is some of the best research and information you will gather about what will make your business successful in future.
Here are the steps you would need to take. First, you would need to know all your current business numbers. This will be the basis for the plan. You're going to need to know: 1. What your current average monthly sales are 2. What your current average monthly material cost is 3. What your current average monthly labor cost is 4. What your current average monthly fixed expenses are 5. What your current average monthly variable expenses are 6. What your average number of transactions per customer per month are 7. What your average dollar sale per transaction is 8. What your average monthly profit is 9. What your average monthly profit margin is 10. And what % capacity your business is at right now Second, decide what you want your salary to be Third, determine how many years in the future you want to plan for Fourth, you will need to know: 1. What % is your material cost of sales? 2. What % is your labor cost of sales? 3. And what % is your variable expense of sales?