Had a look and some quick comments:
* If you want to work as a UX Designer, then I think you need more UX portfolio pieces, showcasing your design thinking and how you solved various design problems. Most of your work seems to be campaign or brochureware related, I couldn't see anything transactional or application related for example, so try to get more experience in that area too.
* If you've done anything in the mobile or app space include it in your portfolio. If not find a sideproject you can work on and create a case study which you can include in your portfolio, similar to http://www.repeattimerapp.com/how/
* One of your designs (under construction) looks like it's a Wordpress template - try to avoid showing unfinished work
* Lorem ipsum is verboten, try to avoid it http://37signals.com/svn/archives/001083.php
You might also want to review the following pages, to give you an idea what companies like Google, Apple, etc expect.
http://www.cooper.com/careers/interaction-designer.html
http://www.cooper.com/careers/visual-designer.html
http://www.quora.com/What-do-clients-employers-recruiters-lo...
http://www.quora.com/User-Experience/What-are-the-best-UX-De...
A great blog by Simon Pan - also from Australia - http://www.simonpan.com/how-ux-found-me/ - maybe email him, I'm sure he's got other tips...
In summary, judging from your portfolio only, I think you need to get more experience (agency / startup) before applying as a UX Designer at Google & Co.
Nice cookie rendering btw ;)