Next you'll make the zipper leader for your "Lining Roller" canvas. Follow the same steps with one exception. Position your closed zipper face up with the tab to the right as before, but you will be positioning the canvas above the zipper instead of below it. Hopefully you can see the difference in the photo below where I have already attached the new zipper canvas to the Lining Roller Canvas.
If you chose to make zipper leaders for your quilt top roller also, you will use the same steps as the "Lining Roller" canvas above.
To make extra sets of zipper leaders, position the closed zipper face up with the tab to the right. Stitch a new canvas to both sides of the zipper along the 1/2" folded edge of the canvas. Stitch them on your domestic machine as before using a zipper foot starting at the center and stitching to the ends.
Label the top canvas "Lining Roller" or "Quilt Top Roller" and the bottom canvas as "Pick Up Roller". The Lining and Quilt Top zipper leaders are interchangeable, but the Pick Up Roller zipper leader is not.
Each zipper will make one set of leaders. With the 4 zippers I purchased I have one machine set of Pick Up Roller and Lining Roller leaders, and 3 extra sets of the same. I chose not to stitch a zipper to my Quilt Top leader at this point in time. I may change my mind in the future, though.