Angle Moving on a Punch

How do you move the angle? By drifting the rear leg slightly off to the side. Does this make a huge big deal? You bet it does. If you step towards a punch while letting your rear foot drift, the punch will "magically" go over your shoulder. Without drifing, you will walk right into a punch. Also, this can be performed going backwards as you can drift off the center of the target which is your head!