Whitespace should be your ally, don't be afraid to have large margins, spaces, and padding between your website content elements. This actually helps to clarify information and make it easier to read. For those with some web designer skills, you may also use whitespace (also called "negative space" in design 101) as a website design element on its own. Some examples of the artful use of negative space can be seen in Asian art, Ikebana, calligraphy, typography and minimalism, but the same principals apply to good web design and photography.
Symmetry is overrated, as you gain more practice experimenting with whitespace in your website content layout don't be afraid to stray from rigid layouts. Visual balance is not about symmetry. In fact there are many optical illusions that designers employ where asymmetry will actually look better to the eye than something perfectly aligned.
