>>20472881people mainly only approach others with whom they are familiar with.
you both both go to the same bar every thursday say hi.
people who are unfamiliar often have an agenda or a pitch. so treat the pickup like a salesman treats a lead.
a popular trick is "foot in the door" technique where you open up with a mundane question where she says "yes" .
try to invite her to join you on a mundane and safe activity like defacing mafazine photos, or playing a game.