I'm so glad you made a tutorial for this~ And it was very easy to follow with clean and simple drawings. Was planning on purchasing either a flimsy helmet for ~$16+ or an amazing solid helmet for $44+. Definitely going to try this procedure out - since I have a lot of cardboard laying around my house. xDD This is going to save me lots of money. =D THANK YOU!!!
Atalanta (Fate/Apocrypha), Sailor Saturn (Crystal), Saber Alter & Dark Sakura (Fate/Heaven's Feel), Sangwoo & Yoonbum (Killing Stalking)