Well, they're not quite finished yet, Empty.
First you need to portforward, otherwise he won't be able to connect to the gameworld.
Go to
PortForward.com - Free Help Setting up Your Router or Firewall
Find your router and search for a tutorial. If you already know how to open ports, open the ports 7171/3306 and 8080 in your router and in your firewall, if you did that correctly, your friend and players from all around the world will be able to connect.