I have lined all but the first big tote I did. Most have simple pockets too. I attach the closure tab to the inside plastic bag's rim and then cover that up when I sew in the liner. I keep learning what steps I should take first to make the work easier. Started a bag last week and messed it up right away as I forgot to attach a simple outer pocket (good for receipts or tissues or etc) before sewing the front and back together. Adding a pocket now would be hard to maneuver around the sewing machine.