The files are already properly oriented ! The head is designed for a 24 centimeter tall head, to mesure your head you need a straight tools (like a ruler) from below the chin to top of your head. (example on the last picture)
To assemble it you'll need :
6 x M3 insert (hole are already marked)
2 x M3 x 12mm (jaw articulation)
4 x M3 x 6mm (spring attatchement)
2 x Traction spring 0.5mm, 15mm, 5mm (link : http://tinyurl.com/bddaeb3p )
To scale : your size / 24 = %
Example : your size is 21 centimeter (you want to downsize) > your formula is 21 / 24 = 0,87 you have to put your model at 87%
Example : your size is 25 centimer (you want to upsize) > your formula is 25 / 24 = 1,04
you have to put your model at 104%
Warning
You can use this head in sour fursuit selling project but you have to credit me : Zata-s Arts
But you cannot sell Only the printed headbase !
My link to my website : https://zata-s-arts.webnode.fr/
The author marked this model as their own original creation.