#1 Stop pestering people. No one wants to get a sermon in the checkout line or from a door to door salesman. I say this as someone who has left the church after being big into the community for years during childhood.
#2 Good works back good words. Be an example in your community. Help everyone, not just fellow Christians. Get people the help where they need it. Build a ramp for the handicaped. Feed the hungry. House the homeless. Don't make it a drive for followers, do good for the sake of doing good. The followers will come.