To make someone a vampire is fairly simple. Just follow these steps...
A) The vampire must drink the human's blood
B) Then they must make the human drink their own blood, willing or not
C) The blood will only last in their system for about 24 hours, depending on how much they intake
D) The human must die before the vampire blood leaves their system
~ Not all suicide will work, sometimes the vampire blood will heal the human if the dying process is slow.