As you move forward, it is important to formalize your business and make sure you have legal aspects to protect yourself in place. 

Business Startup Checklist - use this to help you make sure you take all the necessary legal, state, local, and basic steps to launch a business 

You will have an option to formalize by establishing a business structure. Learn more about the variety of business structures HERE from the Small Business Administration. 

You can follow step by step what is essential to establish by reviewing this page from the website HERE.