For your Live Birth Registration,  This is the paperwork that needs to go to the Department of Foreign Affairs and Trade if you are having to send it off yourself.  My notary offers this step when documents need to go to DFAT.

This the WA application for your live birth registration. Slip in a note before posting that you will be needing it notarised and apostilled.

This is the South Australian version to apply for your Live Birth Registration.

https://www.nsw.gov.au/sites/default/files/2020-02/apply-for-original-registration.pdf   Good luck !!

For reference

Hi Everyone,   I used this Vic document

Hi, I found this on the Qld BDM, it is what a friend will use to get her sons birth registration.

This is the foundation document for the Birth Certificate, it is known by different names in different states, it is what your parents fill out by hand and the Doctor and midwife/nurse sign it. Tell B.D.&M. when you are getting in the form/letter that needs to be Apostilled and will need to be certified “Appropriately” to the Department of Foreign Affairs requirements… When people have done it in their state, please write all the info in this group so others can follow your lead… After you receive it, get it Notarised (Notary Public – $120)  then “Authenticated” by the Department of  Foreign Affairs. (about $80)