What is the process for applying for a DTV visa from Germany?

Maybe it helps someone. I applied for my DTV back home in Germany in Berlin. I submitted a bank statement (6 months), my registration of my company (Gewerbeanmeldung), my tax return and a short letter. I explained that I am a ghostwriter and find most of my clients on a platform. I included a screenshot of my profile and a table of my finished projects.

After four days I was asked for scans in good quality (no photos) from my passport, my picture and my registration certificate (Meldebescheinigung).

Two days after I flew to Georgetown and waited there and checked the status of the application daily. After nine working days I got my visa. Never received the email (some issues with my mail address), but downloaded and printed it from the website.

I changed my original travel plan. I wanted to go to Da Nang (the flight number I put into the application). Instead I took the train from Malaysia to Padang Besar. The officer looked at my visa, asked no questions and started counting. His biggest issue was to count the 180 days right. He took no fingerprints or a photo, just stamped my passport after awhile and gave it back to me with a smile.