Listen Op, I don't know if you saw her after you gave her the card but the thing I would do now is to approach her by saying "Did you like the card? I tried really hard to make it that way" even though you didn't. That should sound funny to her. :) Or at least I think so... Anyway, you shouldn't try to approach her with "hey baby", I don't think that she would think that's hot.
the thing with shy girls is that they are only shy in the beginning. Once you know get to know her, or once you actually start conversation it shouldn't be to difficult to continue it.
Definitely do something, who know maybe yu actually end up in the same college. :)