Democrats Abroad Australia does not offer tax advice or endorse specific tax consultants.  But following are some resources to help you with all the complexities of filing as an overseas resident.

List of U.S. tax consultants in Australia from the U.S. Consulate’s website
American Citizens Abroad Tax Return Preparer Australia Directory
IRS info page on taxpayers living abroad 

You might also like to post your tax question or tip to the Democrats Abroad Australia Facebook page.  Let's help each other out!