Flattery works if its true. Your eyes are gorgeous, wow you look pretty today, I like your music.
Remember little things. Her favorite song, what color she looks good in, her dogs name. She'll think your amazing. Just make sure this doesn't become stalkerish. Remember things that she tells you, or you think. Don't look up things on her. That will creep her out.
If someone is being mean to her, stand up for her, defend her. This is a good way to make a friend notice you. Don't make fun of her, unless she starts it, even then, be careful. Don't insult her, don't insult her friends.
ha, strop......that dosn't work much for me. The drink thing, I used it more then once a few times the girls just takes the drink and leaves.........but it did work once.