Whatever qualifications you have from the USA will be fine to transfer here to OZ.
We like many countries have minimal regulations surrounding our industry as to what training you must have but in saying that, to make yourself a successful tech and have a successful business/salon, clients expect us to have training and be fully qualified.
We also have the same issues here with NSS and our industry is fighting it all the time.
Go check out NailZoo on YT and on his channel you will see many current affair stories from our 2 top current affair programs on NSS.
I'm in Brisbane (Qld) and I know in my area, mobile is not a big thing and the techs that I know who have tried to make a go of it, can't. I think our clients are like the 'get out of the house' type.
I have a home salon but my clients are still getting out of their own home and having that special treatment done and they love it.
Shellac is just taking off but to be honest, it's not really Shellac as such, it's SOGP in general.....more the 14 day, chip free, instantly dry mani, not the brand as such but many of the NSS are trying to jump on the bandwagon here and are using the reputation and good name of Shellac and offering a SOGP service that is not Shellac but a cheap import from God knows where.
As long as you abide by your states health regulations, be qualified and provide a good healthy salon with great services, then you should be right
If you are looking at starting a home salon, you will need to talk to your local council and see what their rules are as they all have different rules when it comes to having a home business, no matter what it is.
I hope this helps
Any of you are welcome to PM me if you want to chat in private about anything