Not bad for a first website.
The main content area is sort of small and doesn't line up with the left side of the header. You may want to check your code and check the website out in more than one browser.
Particularly if you test on Internet Explorer only, you're bound to be committing serious HTML errors that will not show because IE's support for established rules are extremely poor.
Test on Firefox, Safari (if you have a Mac), Opera or Netscape. All of those more or less follow the established rules to a fairly exacting standard. One of those rules of web design is "if it looks good on your computer, be ready for disaster on someone elses".