To send things to Australia, you can choose from the following methods:

1. Postal/Courier Service: You can choose international postal or courier service providers, such as DHL, UPS, FedEx, etc. You need to prepare the package you want to send and fill in the necessary waybill and customs declaration documents. Contact the postal/courier service provider of your choice, who will provide you with detailed instructions and price information.

2. Online Platform: Many online platforms provide international logistics services, such as eBay, Amazon, etc. You can create a logistics order according to the platform's requirements, and then hand over the package to the designated logistics service provider.

3. International dedicated line: Some logistics companies and airlines provide international dedicated line services, and you can send packages directly to Australia through them. This method may require you to contact the logistics company or airline for detailed process and cost information.

Please remember that before sending a package to Australia, make sure you have understood and complied with the relevant customs regulations and the list of prohibited items. In addition, it is recommended to purchase appropriate insurance to protect the safety of your package during transportation. Finally, depending on the service provider you choose, shipping times and costs may vary. It is best to compare services and prices from different providers before choosing.