I actually got a RFE in regards to using the nepalese version of the birth certificate in my original applicatin. So, I had to get a new one with the nepali and english version of the birth certificate from Kathmandu Metropolitan office. It seems they provide that these days so good for us now. I don't recommend you to submit it without getting the english 'birth registration' document from the Kathamndu or whichever district your's applies to in Nepal.