From Pattern Piece #4, cut one outer needlebook page from the flannel.

From Pattern Piece #5, cut one inner needlebook page from the flannel.

Make sure that the fold of the flannel fabric is on the straight of the grain. It will be important later on to make sure that the straight of the grain of the fabric is aligned in the center of the needlebook where the pages are attached. The pages are cut so that they do not extend outside the needlebook, and so that when closed, the inner page does not extend past the outer page.

If you do not wish to use 100% flannel for your pages, you might choose wool flannel, wool felt, soft wool fabric, or even a cotton fabric. Polyester felt, batting and fabric will draw moisture and may cause your needles to rust.