According to
http://www.uac.edu.au/documents/atar/2014-main-cutoffs.pdf
The cutoff for this year is 98.00 and there are vacancies at the moment (indicated by the (V)).
That means you didn't make the cutoff.
Last year's main round:
http://www.uac.edu.au/documents/atar/2013-main-cutoffs.pdf
Last year's last round:
http://www.uac.edu.au/documents/atar/2013-late-cutoffs.pdf
Notice how the ATAR cutoff was increased in the late round last year (that was probably due to no (V) last year).
Hence, this year (because there's a (V)), there's a
SLIGHT chance it may drop.
So it's still worth a shot trying out for late round (since you won't lose anything).
Okay.
Steps:
1. Accept/enrol into B Science (advanced). This would
ensure you aren't left without a position at any university next year.
2. Go to UAC > Check and Change > Make sure B Psychology is
above B Science (advanced).
Do step 2 by the 23rd Jan. Results released at 9pm 30th Jan.
3. If you are accepted, go back and decline/unenrol your main round offer. Accept B Psychology.
If you aren't accepted, keep B Science (advanced) and maybe try again next year.