First, remove the suction cup of your mirror by pulling to release the ball carefully from the socket. Attach the gooseneck attachment by pushing the ball (on the gooseneck) into the socket until it clicks into place. Ensure the gooseneck attachment's suction mechanism is unlocked by turning it in a counter-clockwise direction. Place the suction cup on a clean, smooth, flat surface. Press down firmly to ensure a tight seal. Turn the suction mechanism clockwise to lock the mirror into place.