you’ll have to show invoices that you actually make money from this and business license (LLC from the USA or similar) proving it’s a real profitable business.
I tried to apply for an e visa for Thailand while I was in Vietnam. One of the required documents was for flight into Thailand. Because my flight was for Vietnam—> Thailand, the embassy wrote me an email requesting proof I was in the USA and not abroad. I was short on time and ended up not following up. But this was my experience.