1. The first thing I noticed was that you repeated the side navigation in the center?? I would keep what you have in the center and save the side for a different set of links.
2. Definitely need a better logo. There are tons of places online where you can get a logo generated for you for free, like http://www.webgfx.ch or http://www.cooltext.com. It would be even better if you had a graphics program to do it.
3. Sorry, but really not digging that banner with Tweety Bird. It makes the site look "kiddie."
Other than that, I like your layout and color scheme.
Your colors are just fine for what your doing. The navigation system works for you, too. I would change up your logo a little, maybe do something with a little more oomph (Is that a word?). It seems to plain Jane for the site. Otherwise, nice job. You're on your way...
Your site is called "Digital Vale," so I would have a font that looks, well, digital! Something like "Westminster." (I think that's the name of the font...) I also think that the background of the logo should blend in with the rest of the site, not be its own background set against that bright blue. Just my thoughts... Other than that, the colors are cool and the layout perfectly fine.