Step 3: Drill into the pieces

Picture of Drill into the pieces
Sizes and placement of the screw will vary, and I did not take picture of the holes being made due to my hands being busy. You may want to have two helmets, so that you have one to practice on. I placed the screws about an inch and a half apart, due to a bulge in the middle of the helmet. I simply placed the fish sideways against the helmet (turned sideways also), and drilled through them both with two woodscrews.