It's a major award!
Yeah, you need to account for the thicknesses of your material. Bends and corners actually change the length of parts. I used to work in a sheet metal shop designing frames and have learned that a lot of that transfers to this.Luck be with you sir. I'm working on the same helmet from foam and the paper patterns do NOT transfer well to a different medium.
I actually used Armorsmith to adjust it to my head. Using the pepakure templates here and modifying them a little bit in Armorsmith, I transferred it to foam and added details. The overall dimensions of the helmet is 24.4cm wide, 36.4cm deep and 28cm high.PlanetAlexander; if you dont mind me asking, what size did you make your helmet? I measured my head just like Ive read in various scaling tutorials, but the helm Im making is looking really small. I shrank it from the original "Spartan Sized" version by 2cm and when I fit what I have to my chin, my eyes are almost at the top of the visor and the overlays Ive made this morning put my head a few cm over the top of the helm. Question is open to anyone, dont want to waste my materials, but also dont want to waste time making a helm thats way too small