It's hard to clarify it in words, really. The Shiseido I use is the proper width for the length of wicks I need, and over time, I've come to know the proper width strip to cut, which I pull apart, as close to perfectly in half as I can get. So there is a "cover" on each piece, but only one; I've found that it makes no diff whatever to the vape if I leave that cover or pull it off, so I leave it. At that point, I lick my first and second fingers and thumb and roll the strip loosely, but enough so that there are no flyaways, and quite tightly for about a half-inch right at the end, which I use to poke thru the coil. At that point, I only need to trim off that tightly-rolled bit, and perhaps any uneven bits at the other end, and it's perfect; the Achilles has a very deep well. I let perhaps a quarter inch of wick rest on the bottom of the well on each side, to make sure that the wick has a really good soaking contact with the juice.
But it sounds to me like you've figured out your own happy place with wicking, so I'm not really sure why you're confused. We all probably have our own little method that we've worked out over the time we've been vaping and making our coils, so if it works... you know... don't fix it.
Just vape and enjoy.
Andria