As for your question about avatar's,
Were you asking where Ayumi's gallery is?
(Where CookiesNCream and Ayumi got their avatars)
Or where Ayumi gets her sources?
If it's the case of Ayumi's avatars; as Wooof and CookiesNCream already answered; her giveaway thread.
League of Legends NA Versalia
Aura Kingdom Siren Versalia & Zynnia & Vynnia