It is a good idea to use some Scotch double sided sticky tape to pin down the coil and little metal buttons to the sticker that covers them and holds them to the phone battery cover. The clear inner sticky film that comes with the palm cover will probably be ruined in harvesting and you don't want to loose those little 5mm metal buttons which are needed for the magnets on the base to grab your phone and start charging, also your touchstone charger wont stick properly to your Mugen cover unless you do a quick clean off with alcohol and use the double stick tape to get everything attached.