Australia is a well developed country in terms of infrastructure, education, health and economic freedom. And, as you may have noticed in the previous collections of designs per country, the ones who have these factors also have a lot of designers who work and produce really good designs, having a competitive space to work in.
With no surprise, Australian designers are talented at least. The majority of them is oriented towards graphic design, but this is a case for almost every country, but they also have a good number of illustrators among themselves. I only featured a few of them, but a few good ones.