Step 1 should be cut 1 lining – 4″ × 11″ not 4″ × 9″
(glued to composition book cover)
Step 6 should be Place the outer cover right side down, then lay the center lining (4″ × 10¼" not 4″ × 9″) over the vertical center wrong sides together. Next place the hemmed lining pieces right side up matching the raw edges. Round each of the outer corners by placing a quarter on each corner, marking the curve and then trimming the fabric from corner.