Step 4: Step 4
First, let's take off the chrome, black and copper stickers that cover some screws and wires and maintain the wole thing (Photo 2). Actually, taking the whole "stickers" off would be hard and useless. Just use the cutter to cut it along the edge of the frame (Photo 3).
In some points, the sticker can't be cut : don't force on the cutter, that's because there are hidden screws.
Now take the sticker off on the outside edge (Photo 4). Do the same for the black sticker. Now you can unscrew the hidden screws, which are not masked anymore (Photo 4).