Here are the rules for character creation. Please read them before creating a new character.
1. Names: Character names must be traditional Warrior cats names (noting like "Toasterleap" or "Carface"), cannot be those of main characters in any of the series (side characters are fine), and must correspond with their rank (AKA, an apprentice would have the "paw" suffix, a kit would have the "kit" suffix, etc). Also, you cannot have a cat with any of the words "Moon", "Sun", "Dusk", "Dawn" or "Star" in their names (However, River, Thunder, Wind, Shadow and Sky are completely acceptable).
2. Ranks: Characters may start out as kits, apprentices, warriors, kittypets and loners. If you wish to rank up in your Clan, you will have to do so in-character, and if you wish to become a rogue (a troublesome loner) then you will have to play it out in the RP. Remember, your cat's rank must correspond with their age (AKA, a kit couldn't be 12 moons old).
3. Ages: Warriors tell time in moons, which are close to months. So a kit would be 0-6 moons, an apprentice 6-12 moons, and a warrior, queen or medicine cat over 12. It may not work this way elsewhere, but on WNL, a cat must be over 24 moons to become a leader or deputy. There is no set age for elders - they simply retire when they can no longer fulfill their warrior duties, or have suffered a crippling injury. Cats at WNL cannot be over 84 moons, which is 7 years.