This design requires a little assembly. First, be sure you've secured the camera cable to the Pi camera board, then insert the camera board into the front of the camera case, pressing the back of the case into place until it clicks into place. Slide an M3 nut between the two legs of the GoPro-Mount-style base. It will be held in place by the mount legs. Insert the M3 screw through the swivel bracket, and base, securing it through the M3 nut, screwing in hand tight, then backing off one rotation. Insert the swivel pins into each of left and right holes in the swivel bracket. place the camera case between the pins, such that the pins pop into place in the holes on either side of the camera mount. This might require some outward pressure separating the arms of the swivel bracket to accommodate the camera case, while moving it into position.