What documentation is required for self-employed individuals applying for a visa in Thailand, and do I need a return ticket with a DTV?

This post discusses two main queries regarding visa applications for self-employed individuals and DTV (Digital Nomad Visa) entry into Thailand. Firstly, whether a professional portfolio is required in addition to a business license, and secondly, if a return plane ticket is necessary when entering with a DTV. Responses suggest that while some embassies may require both a portfolio and a business license for self-employed individuals, one user successfully used a one-way ticket without any issues regarding visa checks.