Step 3: Trim the pins and glue the ends
Once the pins are neatly glued to the cardboard you need to cut the pins (scratches on the side of your neck are not trendy, well, maybe in Halloween...)
Cut them as close to the cardboard as possible (wear safety goggles! the bits go out flying and can be dangerous)
Then, for extra safety, put a little bit of hot glue to each of the metal ends.
After done, cut the excess of cardboard so the piece is nicely shapped