I taught how to make this in a sewing class. You can start with a quilted placement, oval, square it doesn't matter. Fold it in half and add a handle on each end out of grosgrain ribbon. Fold in half and mark center line. Then on the center line arrange your zip loc bags (freezer bags are nice because they are thicker) with the bottoms overlapping in the center, zippers to the outer edge. ( have them come out both directions) Sew across all. Then take a piece of 1" wide grosgrain ribbon and cover the edges of the plastic bags, sew down both sides, fold over at the ends or wrap around the whole placemat. Add a piece of velcro on the outer edges to close and you are done! It is super simple, it is something I had my preteens do in a sewing class to give themselves a sewing bag to hold their supplies. Only straight stitch involved. Kids love it..so do adults.