@redvelvet Anong language written yung original documents nyo? You can check the local embassy kung nagproprovide sila ng translation services.
Tama din si @cholle, if youre outside Oz, pwedeng di NAATI-accredited. Make sure lang na qualified translator yung nagtranslate and hindi lang basta sinong knowledgeable sa language na yun. In our case, written in Japanese mostly yung documents namin so we had to look for a freelance translator. Mahal kasi pag sa translation company talaga pinatranslate; mukhang tinanggap naman nung CO.
Just make sure lang na nakalagay yung Qualifications nya at contact details. Have him/her sign the document too. If may letterhead sya mas ok. HTH