Ask questions, if you don't understand exactly what is happening at any time - ask. This is your life and the decisions made by others have a direct affect on you. If you are a member of a union, talk to them about any problems you may have with your claim. Your employer may be of some assistance in dealing with problems. If you are required to travel long distances to attend Case Conferences, medical appointments etc.
Photo copy all out going mail.
Get a copy of the WorkCover Act. You will never memorise it, but it is an invaluable reference source. Lodge a dispute form if you consider any decision unreasonable. A Medical Authority Form gives you some control over who accesses details of your medical file.