Now, with two persons, figure out how much extra room your blind needs by holding the trim in the window while the blind is down. Test by opening the blind and mark with a pencil.
Measure the depth the blind needs on the L-trim and mark along the entire length.
Wipe the L-trim with alcohol and paste the double sided tape along the marked line.
In our case, we had some extra tape that we needed to cut away, since our double sided tape was a bit too wide.
Now, your L-trim should be ready for sticking.
Remove the blind from the window and with two persons, paste the trim in the window (make sure that the tape aligns with the front of the window).
Reinstall the blinds.
We noticed that the metal tape would sometimes scrape against the glass. If this is the case for you, remove the blind from the window and fold tape along the backside edge of the metal tape/blind, then reinstall the blind.
Since the magnet is placed in front, it doesn’t affect closing the blind, but it will protect the glass.