1st off... don't be bias.. and especially don't cheat!
sorry but i have to admit... hmong ppl like to bribe.. so no bribing.. lol..
make sure none of that happens.. and let it all be clean..
2nd off.. Song choices.. what kind of event is it? Can they sing in english? or just hmong? or both?
3rd off.. their talent.. do they have any? how's their voice? Can they reach the pitch? Don't base things on their appearances...
erm erm erm.. that's my thoughts on judging..
then again, it's your own thing... so you can judge however you want..