I found images of actual covers online and printed them with black rectangles on the binding edges. I always print two of each hoping to end up with one of each. :D
I cut white mat board to use as filler. I glued the covers onto one side of the mat board, leaving the black portion long and unglued.
I glued thin cardboard to the back of the mat board.
I folded the black portion over the edge and cut it to fit. Once glued in place over the cardboard, it gives the illusion of a bound edge. :]
I’ve also seen them with a white backer, so if you don’t have thin cardboard you can skip that step.
I’ll make a number of other artist materials, but these are a good start.
Into the crate they go. Lyssa makes the best paper towel rolls. :D