By writing a detailed, well explained app, it proves you have some knowledge and is more appealing to a leader. Not all people judge based on app, some clans are willing to give you a test.
raku is currently not recruiting. You can go checking around in the clans boards to find a clan you like. Try your best to make a good app, it will better improve your chances ;) You could also try [Bleu] They really dont care about app forms, and they teach as well.
Yeah the your app tells them about yourself and what you can do for the clan, and you can show off your skills. Also apps are important because if someone just rushes then that tells you they just randomly picked the clan, and probably won't be a good member.
\o\ | ORMO | OSHI | OLDA | [duck] | Team Canada | Maple Syrup United | Team Philippines | [UssR] | Anime United | /o/