Is your pronunciation clear? Do other people (native speakers and other non-native speakers) usually understand you easily? Do you consider it "necessary" to try to emulate "authentic" Australian (or British or South African or Kiwi or Texan, or Bostonian, or Canadian, or "mid-Atlantic", or "international" etc) accents? If so, why? What pronunciation tasks do you remember doing with your favourite teacher(s) over the years which have helped you to achieve the clarity of pronunciation that you currently have at the moment?