Thanks for the welcoming and the reply.
I just double checked the SOL there in the link you provided and it is definitely still on the list (although I think it has definitely been removed from the WA state nominated list).
I should say it states it as Wall & Floor Tiler which is what I am studying.
My understanding is once I have received my qualification (Cert III) and apply with TRA for the skills assessment, I apply for the 485 visa and it gives me 18months to work in my industry. During that time TRA outlines that in order to pass their assessment I must complete in the region of 1800 hours in my trade with onsite assessments carried out by them during that time. When finished and I pass, I am able to apply for PR?
If this is all wrong then I am definitely up the creek without a paddle!