Not sure where you got the image but it is not the image of the K&D remover, not accurate at all, and the OP IS a beginner which was what the whole topic was anyway.
This topic is becoming toxic, almost as bad as lubrication and cleaning solutions. There is more than one way to remove a staff, plain and simple, and although one way may be preferred, it's not gospel.
Im done with this debate, everyone have a good day.