OK. I like a guy too, and this is what I do to get his attention, and good stuff happens after that.
I take out my notebook, draw something extremely random (last drawing was a fat squirrel with a muffin), and I go up to him, and say "Oh my god. Look what I drew. It's *whatever it is*." That usually gets his attention, and we get a good conversation going a times. For a bunch of other girls, this has done good for them too.
Well, that's how to get their attention. With other junk, I have no clue how to deal with that stuff.