What are the photo requirements and application details for the DTV (Workcation) visa at the Royal Thai Embassy in Berlin?

If you show your employment, you will need to get a letter of approval from the employer stating that you can work remotely in Thailand. If you can show the your business is legally registered and operates showing plenty of income, I would go with that.

As for the picture I used a simple phone picture with a blank white background.

Why don't you ask advices to someone specialized like an agency? They would guide you through the process : try that one

For photograph just see

It is just one of the embassies having the photo requirements online available.

If you can get the necessary documents from your employer of your remote job, I would focus on that.

Self employment can be more difficult regarding necessary documents.

I would recommend using a proper digital passport-style photo with a plain, light background, good lighting, and a clear view of your face. A regular selfie may not meet the required standards, so it's better to avoid unnecessary risks.

Being both self-employed and employed part-time is not a problem in itself. The DTV Workcation category allows different types of remote professionals. What matters is providing clear, consistent documentation proving your genuine professional activity, income, and ability to work remotely.

You can declare both activities, but I would recommend building your application around whichever provides the strongest supporting evidence, whether that's your employment contract and employer confirmation or your business registration, client contracts, and proof of ongoing business activity.

The goal is not to submit as many documents as possible, but to present a clear, well-supported application that meets the Royal Thai Embassy in Berlin's requirements.

Q1..i submitted a proper digi pic but I know some approved with a selfie. With Q2..I did both, no questions asked via Taipei Embassy.