After cutting the liners apart and removing the clear plastic cover,
Step 1: I fold back a small section of the white base sheet under the card liner and lay it over top of opened card. I can see through this white base sheet to place evenly over the card, with all edges showing. Adhere the adhesive backed line to the card at the exposed end.
Steps 2 & 3: Using the burnisher, I slowly pull back the base sheet, while sliding the burnisher along to follow.
Step 4: The finished lined card will show a border all the way around the liner.