Headspace is great I hope it goes well :-)

If you have not already check them out here are a few more sites-

https://www.youthbeyondblue.com/

Depression explained: in teenagers & young adults - In teenagers & young adults - Depression - Black Dog Institute

Youth Focus

Also The salvation army and Anglicare offer youth mental health services.

You are doing really well being as proactive as you are, we are here whenever you need us

TC