Approved through Wash DC
Really appreciate all the information I’ve read here over the months. Soft power was Bangkok Thai Cooking Academy. Their DTV package consisting of 10 classes over 6 months.
I submitted one month of financials because I had seen that’s all Washington DC really required, but they requested the full three months.  Approved the day after I sent them. 
There is no spot for a cover letter when applying, so I added one to the top of my bank statement. 
Then added an additional cover letter when I submitted the rest of the bank statements. 
The whole process was eight days. 
Woohoo!
TLDR : Answer Summary
The post shares a successful experience in obtaining a DTV visa through the Washington DC embassy, detailing the required documentation, including financial statements and cover letters. The author highlights the approval process that took only eight days and emphasizes the importance of printing the approval email for travel purposes. Comments express gratitude and seek clarification on the application timeline from another user currently in the process.
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