@OP
Notch doesn't give capes to just anyone, and if you think a "petition" will make him give you one, you're fucking retarded. Notch has only given layers capes because they have done something outside the box.
@BonreoCat
No, there's no mod that does that. Sure, there are Bukkit plugins that'll allow it, but you must have Spout in order for it to even somewhat work.