There are many areas that you can market yourself. One great area is using the social media sites like Facebook, Twitter, LinkedIn and develop a relationship online with people and let them see your work. It doesn't happen overnight but the more you keep your presence out there, the more people will rely on your services.

How can I market my web design business? Forum marketing beat all you mentioned above if done well, see Cokoye forum market here http://cokoye.com/internet-marketing-discussions/cokoye-step-by-step-forum-marketing-guide

To market web design business using Internet market is all about relationship, always available and trust, which online forum marketing like Cokoye.com will easily provide.