Make sure when addressing the selection criteria you write a paragraph on each section demonstrating how your learning/experience qualifies you for the role etc ( this is what is expected in oz and why a lot of Brits don't get through the first stage. Also contact the person named on the job advert, have all the questions you want to ask to hand, ask about the unit, what they are looking for in a candidate etc ( keep it informal but like an interview if that makes sense. Best of luck.