Your requirements will vary depending on your class of licence. To be eligible, you will need to meet the appropriate technical requirements.
If you do not meet the technical qualifications, you may be able to obtain one through recognition of prior learning (RPL) by a registered training organisation (RTO). Please see the attached resources for specific information on these requirements.
If you are an interstate applicant, you may be eligible to obtain a licence through mutual recognition. If you are an international applicant, you may have to have an overseas qualification assessed for equivalency prior to applying.