"Ballroom lines" is the tape, and ther's a later version, but the first one is pretty good.
I've been taught that, in the same foot lunge, my shoulders should stay horizontal and NEVER let my right arm drop, even though it's tempting to do so because of the lady's position. And Don is right - everything is "up".
My first new year resolution is NEVER NEVER NEVER look at the floor, but to inspect the ceiling lights while i'm dancing!