Here are my instructions.
There are a handful of clips on the top and bottom that need to be popped out. There are also up to five 3M adhesive patches.
1. Open your liftgate partway (stop the power liftgate going up, then stop it again going down to make it hold at a comfortable height) so you can attack from the bottom. You don't want to access from the top because you'll scratch your body paint.
2. The chrome strip sits on a black plastic bracket, which itself is bolted to the liftgate, that houses the camera and lock button wiring. You are prying the chrome strip off of the black bracket, which stays in place.
3. Start at a bottom corner and attack from the bottom of the liftgate looking toward the spoiler. I didn't have a trim stick, so I used a long flathead screwdriver. Slide it in between the bottom edge of the chrome strip and the long black plastic triangle. Do not put your screwdriver against the body, always between the chrome piece and black plastic.
4. See my pictures below of the underside of the strip - there are a bunch of little tabs to pop, I found it easiest to use a decent-sized flathead, put the blade near a tab, and twist 90 degrees to pop them one at a time.
5. Viewing from the bottom, so the tabs alternate near-far-near going across. Get a screwdriver with a decent length so you can put your blade next to the top tabs and twist.
6. If you encounter adhesive, use the flathead like a chisel and poke at it until it gives. You'll see in my first pic the gray squares where I put on 3M tape reattaching my painted brow. When you remove them, there are five total, although all may not have stuck at the factory. You can also use the raised areas where the tape is attached as a good place to twist your screwdriver and pop the tabs.
7. Go slowly, working toward the center from each side. It will make loud pops, but it's a sturdy piece of chrome painted plastic.
8. The lock button is separate and sits on a rubber gasket thing. Don't lose it, you need to get it painted and then reinstall before reattaching your bracket.
Below you'll see some pictures of my installation of my brow strip (that Scott did a great job painting). I'll post more pics of the final product later, but here's the install that I just did about an hour ago, i.e. at night in my garage, hence the lack of good pictures.
I also photographed the brow strip removed so you can see the tabs and adhesive points. My dealer gave me a scratched up one that I plasti-dipped and installed on my car while Scott worked on my paint job. That's the standalone strip you see in the pictures.
Good luck.