Purchase the Certificate III in Fitness (SIS30315) Recognition of Prior Learning (RPL) Kit.
This kit is extremely comprehensive and will save you heaps of time writing it from scratch.
Each kit comes with an Assessor Manual and a Participant Manual.
The Assessor Manual includes the following for each Unit of Competency (Core and Electives) as listed on training.gov.au for each of the qualifications.
The Applicant (Participant's) Manual includes the Application and also the Self-Assessment documentation.