The Australian Embassy does not renew Australia driver licences. To renew your Australian driver licence while residing overseas, contact the relevant State or Territory Road Agency to obtain the necessary forms, which may need to be witnessed by a Consular Officer upon completion and signing.
If the Licensing Authority does require you to have your signature witnessed, you will need to attend the Australian Embassy in person (after first making an appointment by e-mail [email protected] or telephone +380 44 290 6400), bringing along the form, and whatever other documents the relevant road agency requires by way of proof of identity.