I used to be a maker like you, until I learned Blender. Using the in-game file as referrence I hope you all get to enjoy being the Dragonborn and wipe the floor with anyone that says otherwise. 3 separate pieces for easy printing and PLA welding. I would suggest cutting the Base helmet in Prusa Slicer to get an even slice and have it fit your printer. But overall no issues with the mesh, but if you find one let me know. Go far adventurer

Edit 7/13: After printing the top part of the helmet, I found some areas that were thin and knew would cause trouble, went back in and thickened it back up. Edited the placement of the bevels to match the ingame model better, better alignment on the tentacle pieces on the inside for welding, re-rendered, and split the mask into two due to how tall it is. Hope ya'll enjoyAnd scaling, the inner dimensions from temple to temple are about 185-190mm, so fitment should be fine. If in doubt, print a measuring ring by only letting the top half print for 10-20 minutes and scale up or down from there. Any more questions please feel free to message me.