My household just installed 3 Steinheil Crystal protectors -- one incorrectly, and then the next two correctly. The instructions I read, both on the packaging and online, even now seem too vague, so let me try to clarify, both for those who plan to install them in the future and for those who may be unhappy with their current installations.
First, although Steinheil doesn't disclose this, it's true that two protectors come with each pack. Each Steinheil protector comes out of the package with three layers -- the protective film that actually goes against your screen is sandwiched between two vinyl protective layers. After finishing cleaning your LCD with the microfiber, peel off about 1/3 of the protective layer to which the wider green sticker (with the arrow) is attached: the side of the film attached to that vinyl layer goes against the screen of the Droid. Then, proceed with the instructions. The second protective layer (to which the skinnier yellow sticker with the "2" is attached) will take the beating of the squeegee as you try to iron out bubbles. When you are happy with the job you have done, remove the second protective layer. One we figured this out, the installation of the next two protectors went much more smoothly and successfully.