@Waqar *******
proof of relationship, i.e. birth certificate and parent's passport. Proof of current location, i.e. Laos entry, passport stamp. Though didn’t request it this time, they usually request custody paperwork as yes I am a fulltime single parent..Finally, please note, if you’re applying in Vientane, you pay for your application in-person in cash in Thai baht. It's 10k each.