One of the quickest ways to boost your business is by developing a Custom Phone Cases business plan. A business plan is a detailed blueprint of the company's plans and helps determine the resources needed to launch a successful company. It can also help you assess the feasibility of your idea. Here are some steps to get you started. Here are some tips for creating a killer business plan for custom phone cases: First, write a business objective. Once you have one, write a list of goals, financial resources and strategies to reach them.