INSTRUCTIONS FOR USING THE COLD SHOE MOUNT:  As it is with the original metal cold shoe mount, it is a two pronged design.  This means the cold shoe attachment is more prone to break if you remove your device from the cold shoe by sliding it out without removing the cold shoe mount from the viewfinder.  Please remove your device  TOGETHER with the cold shoe mount and then remove the device from the mount when it is both separated from the camera to avoid breaking.  The reason there are so many broken plastic viewfinders frames with the PEN F series is because the original metal cold shoe attachment has this specific use instruction that was not followed (mostly because people didn't know this fact and didn't have access/didn't read to the original manual).  

INSTRUCTIONS FOR ASSEMBLY: if you want a tighter fit for all the pieces, you can dab a tiny bit of glue and glue it together to the mount and then put the rubber eye piece on top of the eye cup attachment ring. The reason we didn't do this is to allow you to disassemble it after use to put it in the bag as we do not recommend assembling together and putting it in a moving bag with the camera, to avoid breaking as these pieces are made with plastic.  If these pieces are made with metal, we still recommend you remove it from your camera prior to putting in a camera bag to avoid damage to your camera's eye piece (see instructions for using the cold shoe mount regarding the reason).