This document outlines 6 common startup marketing mistakes: 1. Thinking about marketing after product creation rather than integrating it into the initial planning. 2. Ignoring competitors and not understanding competitive advantages. 3. Invalid digital marketing budgeting such as relying solely on "growth hacking" or free promotion methods. 4. Lack of market verification to determine if potential customers will actually buy the product. 5. Focusing on impressing investors rather than proving growth potential and business concept to target users. 6. Failing to lay the foundation for further growth, development, and scalability in different customer segments over time.