As promised... A lining can add a lot to a bag. In this case, I added a lining made with home decor weight cotton and it added sturdiness to my "It's a Cinch Bag". You could also add a lining with a pretty printed fabric to give an old bag new interest. Don't let zippers scare you. I promise they're very easy to sew with. You don't need a special zipper foot, just your regular old presser foot will do just fine. Give it a shot! What do you have to lose? Here's what you'll need: A sturdy…