I’d recommend you be careful with your gradients, they are a little too bright, a little overwhelming compared with the relatively flatness of the rest of your design.
Also, I recommend you do something more to make your navigation "pop". It’s the same size as your body text, and there’s nothing there that really makes it look like it’s not just more text.
You’re header is very nice :)
Also, if you’re sticking with the gradient add some padding on the right hand link headers. The text is hugging the bottom/left of the gradient and it looks crunched.