Envelope or pillowcase style Remove selvage edges. Coordinate top and bottom fabrics. Cut batting to fit. Put top and bottom pieces right sides together. Place batting under the wrong side of bottom fabric piece. Pin the three layers together. Do not stretch batting, it will return to its original size later. Sew pillowcase style, turn right sides out, sew opening closed. Tie with yarn or machine quilt.
Bound edge style Sandwich the three layers with the batting inside the top and bottom pieces (right sides out). Pin together. Either machine outline, stitch designs (through all 3 layers) or tie with yarn. Finish the outer edges with binding.