iPhone breathe and clean thoroughly with the enclosed cloth. Remove the first protector of screen protector and position it on the iPhone. Unfortunately in my film the cutout for the FaceTime camera is struck off-center, but at least keep the camera and speakers freely. Thus, I started sticking down (home button). With the small paper card you will probably emphasize the film smoothly and pull out the air bubbles. I have used for a bank card that allows the works. Bonds, the film, the second protective film can be removed.
The casing pull on the iPhone and you have that scratch protection. In the field of iSight + flash manufacturers would like to leave a little less cut; So if you like a little narrower so that the aluminum surface is completely covered. At the bottom I have a little fear that the narrow piece breaks off sometime. Two small connections between the front and back in the area between connector and speaker / microphone could probably generate some stability. But I'm waiting for the time from simple.