Like others, I don't have as many books now ... but of course, there's the special ones that find a place on the book shelf, including photo albums and historical treasures.
I remember the bookends you are showing, and TBH don't know if they are in the stores any longer? or replaced by a not-so-good plastic product? Just might score these at a 2nd hand or thrift shop now!
I am a bit confused here!! ... after using your paper template, did you glue the fabric pieces to the metal? or did you make a slip cover for the bookend? If so, you sure got a nice smooth edge on those curved corners!