Start with an XXL open-faced motorcycle helmet (find the biggest size you can).
Using a dremel, cut the shapes above out of the helmets.
Next, cut the each shoulder piece apart as above.
Glue the pieces back. This is to provide depth.
Cut a piece of EVA foam to the shape above.
Insert the EVA foam piece into the shoulder as shown above.
Drill holes in the front and back of the shoulders. This is where LED’s will be placed.
Cut a piece of EVA foam for the bicep piece as shown above.
Glue the bicep piece to the shoulder piece.
Plastidip, prime, and paint.
Insert LED into the back of the drilled hole.