Can i ask how and what materials you used for your hermit heads? You dont need to go into like heavy details but im curious if you had any recommendations because I was going to attempt to make a MCYT head myself for a convention :]
the materials I used for the box were:
dollar tree acrylic paint
a 12 x 11 inch cardboard box (i cut another inch off to make it square shaped)
for the bangs and inner helmet i used the extra flaps on the side off the cardboard box
electrical tape (not necessary, I just wanted to cover the edges but it does leave a residue)
an old pair of ratty tights my sister let me use
spray on sealant (to seal the paint)
For the nametag i cut out the side of a spinach plastic container and traced the name out in sharpie and found two pens that were from the same brand, took their springs and attached the springs and tag with hot glue
(note: if you live in a hot climate i would recommend super glue instead, my name tag melted during the convention and I had to take a quick stop at cosplay repairs)
I followed both of these tutorials by Elytradragon and notgracelive on how to plan, paint, and how to assemble the helmet inside
basically with the helmet you want your head to be squished so when you make sudden turns or nod your head your box doesn't go flying off
recent addition is adding a chin strap via a headband i got when i had my wisdom teeth yoinked to further prevent the box from falling off
okay i mightve rambled a bit too much CRYING but hope this helped!