Quick tip: this is how to make parts on a helmet engraved. All you need is craft foam, paper, a glue stick and bondo. First you need to cut out the template for the shape you want engraved. Then transfer that to craft foam. Once that’s done, put some glue on the foam and stick it to the helmet. Now put some bondo on the area around the foam and try to make it as smooth as possible so you don’t need to sand as much. Then peel the foam off once the bondo has dried and sand until you are happy with how smooth it is. There you go, a quick and easy way to make engraved parts. This idea is based off of a video from impactprops on how they make raised parts on their helmets