aaaah thats an easy one for me to answer. There are core modules which u must complete and there are 4 electives that u must complete. If u dont, u dont get a HSC only a statement of attainment which basically outlines the modules u have completed. @ this stage it is 2 late 4 u to complete the electives and it would be a huge burdon on yourself to wait 4 TAFE 2 offer these two electives.
My suggestion is that u volenteer with someone that does this type of thing in industry and then apply 4 RPL (recognition of prior learning).
As 4 the record keeping your teacher should of handed u a competency log bog and signed u off on all the modules u have completed. If not then hassle them 4 it because it is your only record of u achieving any modules.