For those that remove a fork from a frame for packing, I find that it is very helpful to make sure I put all the headset parts back on the steerer tube in the correct order and orientation. And keep them on the steerer tube with a rubber band. Plus, I keep a photo of that on my phone. Then if I have forgotten any part of the procedure, a quick glance at my phone is all I need to get things right.
And I also have a copy of the exploded diagram of the headset in PDF format on my phone too, but have not had to refer to it.