One other thing I would say to avoid the "shocked" reaction from cold approaching a girl is a statement of empathy e.g. "I know this is a bit out there but I just thought X about you" then immediately make statement "you seem like you really enjoy life, are always smiling and having fun". Then she will give you something that you can word associate from e.g. "I'm not always smiling buy yea I try", then you can say "I'm the same, sometimes I get a bit impatient with things too (commonality)..so what do you do with yourself when your not smiling and being happy?" Etc etc

Appreciate the fact that some people will be shocked when you approach, give them some leeway and calibrate with SoE accordingly.