Half damage for the save to breath drain, and I think the rest sounds good. Add some flavor and tactics, and it's done.
I'll amend the Special Attacks then.
Updated
Working Draft.
I increased the Charisma to 11 so it didn't have a woeful Charisma penalty on the DC.
Any suggestions for the flavour and tactics?
Here's a start...
Gohei p'oh, also called paper ghosts, are a minor spirits bound into a piece of paper, that act as servitors and guards for evil arcane spellcasters. They will obey any simple command given them by their creator, fighting to the death if called too. Gohei p'oh are stupid beings who cannot understand any task more complex than guarding a room, delivering a message, or spending a night hiding in a room and then returning home. If ordered to do something beyond their limited mental powers, a gohei p'oh usually indicates its incomprehension and does nothing.
Paper ghosts are weak warriors but make excellent spies and sentries, since they're easy to overlook when lying doggo in their default form - who heeds a stray piece of paper?
These malevolent pieces of origami can fold themselves into difference forms to perform their duties; each form has its own powers. The most common forms are listed below. Some gohei p'oh may be able to assume different or additional forms.
Gohei p'oh cannot speak, but can understand all the languages known to their creator.
A typical gohei p'oh is about 11 inches by 14 inches in sheet form, their weight is negligible.
COMBAT
A gohei p'oh will follow whatever combat tactics its creator orders it to perform. If simply told to "attack", a gohei p'oh usually uses the attack(s) of whatever form it happens to be in. Its default "sheet of paper" form attacks by trying to attach itself to an opponent's face and drain their breath.
Gohei p'oh have enough self-determination to change form during a fight, if that would give it a tactical advantage (provided their orders allows them that flexibility). They prefer to change form when not in melee, since they're unable to fight when refolding themselves.