Not sure what your FB page is about, or what kind of people/audience you are trying to attract.
Are you a singer, musician, actor? What is it you do that you feel would make people want to be a fan of your FB page to begin with? I mean, you do something other than just having a FB page, right? As there are 400+ million FB accounts so you will need to stand out from the crowd in order to attract more fans/friends.
Whatever it is that you do, the best bet is to market these talents to more people, gain a following, then more people will want to be a fan.