Who cares? I mean, I strongly believe "textbook stuff" can help, but I don't believe in following everything word for word - especially routines. Mystery's kiss close is NOT something I would recommend to do. Do you not realize how public the PUA world has become? That line has probably been used 1000's of times before. Each moment should be individual between you and a girl. The last thing you want is to use the same routine that an ex-boyfriend used!
Just casually have a good conversation with her in a place where both you and her are comfortable (that way she opens up to you and is comfortable kissing) For example: If she is a shy girl, she may not be comfortable kissing you in front of a lot of people, so you may want to go to a quiet park where they may not be so many people. That's why it is important to get to know the girl better and adapt based on what you find.. canned material does not account for any of the points mentioned above. Any, I shall continue. Have a casual conversation, make her laugh and wait for a bit of silence... (and ensure you have made enough rapport with her from the beginning) and than kiss her. It's not that difficult so don't make it seem like it is!
It is JUST a kiss, relax. Follow my method, stop using canned stuff. I, myself look at canned material but only to gain knowledge for personal ideas of my own or to alter them a bit... not to actually follow them exactly! You should do the same.
Hope I helped,
Axcell.