As I tell many of my clients, before you get into the tactics, figure out your broader strategy: What do you stand for? What market need are you addressing? Who comprises your target market? What headaches are you resolving? What are you trying to achieve with your business?
Once you have all of that figured out, then develop a marketing strategy, including whatever tactics make the most sense for your services within the target market.
In short, you must build a brand around your business, and if your business is freelance consulting, that brand is you.
Good luck and let me know if you need more assistance.