My daughter and I worked on the helm together. We scaled it down to 90% to fit her head and cut it into several pieces to accommodate the Prusa i3 MK3 print bed. We used custom supports. She painted it with acrylic paint (two coats for most colors). So that the circle that holds the lightning bolts fit around the back of her head, I quickly dunked the lower portion of the ring in hot water and formed it around the side of a bowl to create a compound curve.
We couldn't locate translucent blue or red PLA filament anywhere, so we printed with solid colors. Our plan is to cast the gems in translucent resin later.
This was a fun project for us to work on!
.35 layer height with a .6mm nozzle