Hi madmax, I'm also from UW and applied in November 2012.
Several things you need to be careful with:
1. As jes_ON mentioned, the eligibility of your occupation;
2. Work experience must be gained after graduation, which literally means the date of your degree conferral, not when you finished all your courses (degree is normally conferred 6 months after school);
3. Note that work experience obtained during your studies does not count, even if it is a full-time position, similar to a lot of coop students here;
4. Your employer reference letter must contain duties and hours of work per week;
5. Your IELTS score cannot be from when you applied for university. It has to be within 2 years prior to your application to CIO. In addition, your IELTS has to be the general category. I believe university applications would require the academic category.
Hope it helps.