It takes a while before numbers of likers increases.
I would go around liking other business pages. As most people you like tend to follow you back. I also got a lot of people to like one of my business pages by inviting all my personal friends to like it. Their friends eventually liked it too building up likers.
You could try targeting more potential groups of customers you might have such as shops, bars etc. But basically everyone is a potential liker on Facebook.
You could offer customers some kind of discount, say 10% for liking you, as having people add, will get their friends to like you or have a competition for your likers, helping to make your page go viral.
Whats your address I will like you, ours is.... Sdesign1 Liverpool Web Design