There are no rules. Sure there are a lot of graphic design principles floating around, but don't let rules get in the way of individualist expression. Keep it simple. Simple is good, easy and it works. The purpose of web pages is to convey information.
Content is the most important thing.
Make it interesting. Simple does not mean boring. Make sure your site has interest to it. Add color, use different fonts, add pizzazz to your heading, use an animated GIF, however, make sure that your fun elements do not distract from your content. Animation draws the eye to it, so make sure you are attracting the viewer to the right spot on your page.