That’s all!
Answer from Piñata Boy
If I wrap the balloons in newspaper first, then two layers of papier mâché should be good. If it’s a larger piñata you’ll need more than that, but you can add a half-layer of papier mâché by laying on the newspaper strips with some space in between. Sometimes I’ll lay down a layer of checkerboard pattern papier mâché newspaper strips in order to strengthen the piñata enough to hold its shape while still leaving it vulnerable to attacks by small children. If you don’t wrap the balloon in newspaper first, and instead lay the papier mâché newspaper strips directly onto the balloon, then you’ll probably need 2½ – 3 layers of papier mâché. I always test the strength of the papier mâché by pushing in on the sides when it’s dry. If it feels strong enough to hold its shape, go ahead and remove the balloon and see how strong the walls feel without a balloon holding them in place.