Upvote:3
Application instructions can be found on the immigration website:
The relevant section on each is 'Tell us if you made a mistake'
Online:
To tell us:
1. log in to ImmiAccount
2. select the check box for the application 3. select 'Update details'
4. select 'Notification of incorrect answer(s)'
5. select 'Add'
6. complete the fields
7. select 'Confirm'
Paper:
You can tell us of mistakes on your submitted visa application by:
- checking if you can import your application to update us online, or
- use Form 1023 Notification of Incorrect Answer/s (168KB PDF) and email it to the area that processed your application
That said, I don't think mentioning the graduation will make much of a difference to the strength of the application. They'll probably be more concerned with the evidence that you are a genuine temporary entrant and will comply with the terms of the visa if granted.