The "email" link is right over the edge of the div for me on Firefox, and your name shows up on the edge of the div in Safari.
Are these all contest submissions?
See the little underscore that shows up between image links? Need to fix that.
Don't put "under construction". It's pretty much widely accepted that web sites are always under construction or going through some sort of changes. Don't put the link or page up until you are ready for it to be seen.
Also, use firebug - getting to grips with this awesome little tool was very helpful for me when I started coding.
First thing that struck me was the amount of noise in your gradients. It's good that you're using dithering to reduce banding in your gradients, but you've dialled them up too much. Its not too bad in the blue part, where it could pass as a bit of texture, but its particularly noticeable in the grey portion, where it starts to interfere with the text.
You say you have many happy customers, but why aren't they in your folio? All I see are contest entries - did you win the work based on those entries?
Overall, the site feels unfinished an a little student-y. Nothing wrong with that, but if you're applying for a fulltime position I would bolster your portfolio with more real-world clients first.
So I have been coding for a few years now and would say I am pretty good with css. While learning about css I came across Sass, but in the beginning the command line really scared me so I stayed away....
That is good to hear, I was hoping To hear something like this. The art program is really good here as far as I can tell and I really love the teachers, but communicatios will allow me to get transfered...