Now that you have mastered the online networking portion, you need to hit the pavement.
People hire people. So get out in the community and meet your Twitter and Facebook friends in person. Figure out what meetings they are attending, attend a few industry conferences and join groups they are involved in. Figure out what the hot topics are in your industry and discuss them. Build relationships with people. Offer to help other people.
If you are a freelance writer or designer, offer to help someone with a side project. This builds your credibility and gets you a connection to that person.