Those hats are wonderful
My grandson attends Viking camp during school breaks and I’m sure would love one
Do you have a link to the pattern?
I modified the horns, making them smaller.
For the Wee Viking version I knitted the hat large enough so it was loose to start with, attaching the bands made it tighter without making it too tight.
For the metal bands I reduced the width from 9 to 7 stitches and kept the bump the same size.
Viking Camp sounds like fun, my grandson would really enjoy that.