The parts that I believe would need a little primping would be the content title styles, you know the green horizontal bars which holds the header text? Tune these up and style the typography a little bit and now you're talking. The navigation is really good to start with, looks fine as it is.

Another major point would be the way the content is laid out and how consistent it is. At the moment (this may seem a bit wierd in reading) it looks like just some photoshopped filler text, without any regards to how it is to be styled etc. Try and make it more real. Use bold and italics and vary the sizes of your filler text.