Pretty much what Pouffywall said is on the money, but instead of just adding to that body of text with the same information I'll give you guys some small stuff you can work on to help get the ball rolling.

-Talk to people in game and get them to apply. You don't have to have have a high rank in the clan to get people to apply for us, just talk to players you think are cool and get them to apply. Now don't take it too far and stalk people, just casually talk to people you see about it.

-Post on the god damn forum more. Yes forum activity might not be the main thing for official, but it is a factor and its part of being a clan. If you're going to join a clan you need to be part of its community and not some antisocial fagoat. Talk to us via the Forum, irc, or skype, just do something.

-Passion, yeah its a thing trust me. If you can just show a fragment of passion for this clan then that passion will rub off on others, trust me. You can't just leave everything up to the executive members, be a go getter and try to help the clan in any way you can. Go in game and make a room called Spec and just play with people and get our name out there more. Literally anything you can do will help.