You must know your competition in and out. Keep your friends close, but keep your competitors closer. You need to know all the things that you learned about your customers except fill in the blank for each competitor on all of those above items. Learn how you are the same/ different. Learn the similarities/differences about each product and service you offer. Learn how they sell or promote their products /services.
Generally, in a marketing plan the following points are considered _ Market Analysis: First analysis your broader market, where are the opportunities that you can look for? What are the scopes in the current market? After analyzing the broader scope of the market; target on the niche values.