Renew the articles of organization with the state where the company is registered (once a year)
Maintain a business bank account for the company separate from the personal bank account
Obtain a employer tax identification number (EIN)
Report the income and expenses of your company to the tax agency (IRS)
Document the minutes of the annual meeting with your partners
Sign documents as a representative of the company and not in your own name
Include the legal name of the company in all marketing material (Flyers, social networks, others)