well, in this time of a year, only thing you can do is take her to a nice restaurant(expensive is not necessary) and talk to her while you guys eat.. impress her with  all the things she wanna hear. be funny, by nice and be yourself. use all the tips given by all sajha members. take her to the movie afterward if it is not too late. if you think things went well, you'll have a shot next day.

goodluck