Oh shoot, this is the papercraft I am used to making, before I started my armor, all my paper models were made this way, no numbers, just fold the peice and keep going, but I am sure you can number this so you dont forget.
I'm using slyfo's model which I edited this way, I wont release it so I guess I should be ok, I printed it out, got started on the back neck area, works like a charm, helmet so far looks super smooth like bondo was applied lightly, when I finish resin/glassing and sand it, it will look like a real molded helmet. Thanks so much for this tip.