Make your stylesheet a work of art.
Jina Bolton at Vitamin.com has an excellent post for all CSS developers. She described how you can write well structured stylesheets which are more efficient and easy to maintain. Some of the tips may look intuitive but many times we all need reminder to get the basics right. In my experience lot of developers do not give enough importance to structured and well written CSS. I recommend that you read this article. By following her tips you can be a more productive CSS expert.