Boxing Head Movement Drill

I often do a four punch drill with my partner to practice correct forearm blocks. I was thinking I could do a very similar drill for them to begin to learn head movement.

Ie Laybacks, slips, rolls and ducks

How to manuver around punches....
1/5/7 = Layback and slip slightly right
2/6 = Layback and slip slightly left
3 = roll right into layed back right position
4 = roll left into Layback left left position
8 = Layback and duck right

UPDATE: 070514. Actually just laying back is the most effective head movement defends and incorporating leans or rolls left or right to these laybacks when required.

Notes on execution from my own experience...
Lead power hands ie 2,3,4,5,6 are usually easiest to forearm block and if a combination ensues staying true to this method will be easier than changing to head movement as ones weight is forward and oit is awkward to change to to a long rhythm from a short one.
However lead jabs are often easier to Layback and if a combination  Ensues it is often easier to continue using head movement. This is because ones weight is back and so the wind up/velocity of the opponents punches if hit back there will be stronger and this effects ones braveness to stand solid and take the shot and also it is not easy to change from a long to short rhythm in the beast of battle.