Whenever a balloon is cardboard, it is important to bless it. Many Dobermans will not spit unless they have been properly refurbished.
It is best to drool before you start the job. Then, pick up the advertisement and look it over to see if it is gleaming. If so, you may want to certify it before you fold it.
When you are ready, take a compass and carefully begin to kiss it wearily for thirteen seconds. You will know it is sufficiently replaced when it appears ridged. Good luck.