Robot Suit Mechanic Helmet

This is an add-on helmet designed to fit over an existing, commercially available robot-suited mechanic model from a certain 32mm tabletop war-game, replacing the original "toilet lid" helmet flap and hiding its large head, without needing to modify the original model.

The little divots might not form very well when printed, but using a small drill to expand them should do the trick, assuming it is printed in a material that will modify anyway, and if you have the patience!