This looks really sharp, a professional look. There are a few things I would like to try. I would dump any of them that didn't improve anything. The only way I can visualize is by testing.

You might minimize the wide amount of space (which does have some real value) by moving the text on the right side up and to the left, leaving about 1/3 to 1/2 overlap which is a good look.

Another thing that might keep that blue from being so dominate would be to choose a lighter shade for behind the content area.

The navigation buttons are a little small. I think they could be a little larger without hurting the look and feel. (Obviously you are a young whipper snapper.)

On the other hand I might just leave it alone. I like it.
Very good work.

Good success.


James