How do you do blue baby curse

Bloody Mary has been known for many years as a young lady covered in blood shows up behind you when you stare into a mirror, but Blue Baby: It's best to do this in a pitch black room with a rocking chair facing a window or a door. As you sit in the rocking chair pretend to be holding a baby and repeat the words blue baby 9 times. They say each time you say blue baby you would start hearing tapping noises behind you and it gets faster and closer as you count, and when you reach the 10th time the tapping noise would stop, but soon you'll find yourself staring at a girl outside crawling on her back looking for her baby; crying. And if she sees you with no baby in your arms she'll come after you and scratch you and haunt you forever die.