To make an effective plan, there is a famous rule called 4P's. Here, P's stand for Price, Product, Promotion and Placement. In this another P is added called People. Today while doing digital marketing or the traditional marketing one should understand people or the customers you are dealing with. It's important to figure out what is significant for the business, and later make a plan accordingly.
You need to define your location with a description of all advantages and disadvantages. I would include the operating hours and scheduling in this section. You must develop a unique selling point for your business. You will need to provide details about every product/service that you provide and give their features/benefits/values.