Corner Bookmark

I downloaded a pretty cool sword bookmark from @MatthewForde, but it hit the cover of my book before or after a certain point. It's probably fine for softcover, but for hardcover it only really worked right in the middle of a sufficiently thick book. I wanted one that stuck out of the side to easily see progress, but only stuck out to one way so it could be reversed after a certain point to avoid it colliding with the cover. I was honestly a little surprised that no one had made it before, s