To be honest, when I started driving in Amsterdam I was terrible, but picked it up pretty quickly. Didn't know any Dutch (still don't apart from a couple of words, which I forgot now) so I would have failed a written test at "Name and Date" lol. The good thing about over there is, the public transport infrastructure is well established and so many people ride bikes that there are far fewer cars for the population. So I had the room to get accustomed to LHD and their signage (all logical signs to was quick to pick it up). One time I stuffed up was in a big driveway, going on the left side to exit when I should have been on the right. The lady that I blocked had a good laugh.
The main problem with driving is that the driving test is way too easy, teaches you basic things but doesn't assess how well you can drive. New import drivers should get a full license test (that has been vastly redone), fail > L's, pass > full.
Will be interesting to see if there is any impact or if it's business as usual over in WA (hopefully the latter).