no hand written. Before I even approach
Seems strange, either write it while you talk to her, or use a business card, or better yet, get her number.
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So if I saw you, wrote down my number, thenw alked up and talked to you for a little while, and then hgave you my number, it would be weird?
Not as wierd, but if you really want to get in touch with the girl , then ask for her number insteed.. cause if you for instance gave me your number , then I wouldn't call , cause what was I going to say? "Hey, you gave me your number" ... Hahah , you see? :-)