With only one day.....all I can offer you is this advice:
DO NOT TO STRESS! (it's not gonna help)
Practice the hand-off as much as possible, and visualize POWER, Sleekness, Speed...like a Bullet Train or a Cheetah...seriously....become the Cheetah.
Have some ice cream or frozen yougurt tonight, and rest not stress...K?
One last thing.....the faster your hands move (arm drive), the faster your legs will move...try it during Warm-ups! (A runner's drill is to think about sawing wood really fast or taking tickets with both hands for a concert...etc)