What should I do if I misstated my nationality on my Thai visa appointment at the Colombo consulate?

Very good question. I was certain I could - I have asked about it in the past - within this group. But after looking more closely at the requirements - I am becoming concerned. Their requirements are a little goofy though (Thai + English kinda goofy). Like they require my marriage certificate - but that is simply not applicable in my case (simple SETV).

I have sent them an e.mail asking them directly. cross my fingers, tripped is already booked.