Follow Tax Invoice guidelines from the ATO:
Look online for free or paid invoice templates or invoicing apps, which you could use from any desktop computer or mobile device, such as:
To work with your TFN, please download your Tax Declaration Form fill it up, and attach it to this application.
To enroll in NSW White Card
To apply for Police Check
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You could use these sample links or if they don't work on your device or you just want to see other options, you could search online.