being funny on a shy girl...

there are 4 ways to be charismatic:- 1)be a fun guy 2)concentrate on her 3)notice things about her 4)move with purpose
I have no probs with all the steps above. but I have a girl friend who is shy, and somehow with her I can't be able to crack her to laugh. I don't have any intimate relation with her but, with her I'm able to ramp up to kino escalation lvl 3,which involve ,u know, getting to touch her hair,face & all stuff.:baby:
so for the love of god, can anyone PLEASE TELL me how to make a shy girl like her crack up laughing and all, because that seems to be the only thing I couldn't do to her....

p/s up to this point I can only flirt other girls in front of her, and for some reason she's kinda happy e.g she smiles when I flirt :awe: