Helmet from Thor Ragnarok comes with a pin system for the wings to lock into the two positions seamlessly without any protruding tabs or anything. this fully accurate to the actual prop used in the film, and is fully scalable to any head size due to it not using any hardware.

I have any more models on my instagram page @levy3d, so be sure to check me out there for some more interesting and unique models there, also if you have any questions or just want to share your build of my model, I answer all my DMs so feel free to message me I love to see what you guys make with my models :)