Make a template by taking a piece of 8 1/2 by 11 inch paper and folding over the bottom edge to the side.
Cut off the remaining piece for a perfect 8 1/2 inch square.
Cut out two detail pieces.
Then cut out two more pieces of background fabric.
Layer the background fabric right side up.
Then the detail piece, cotton and Insul-bright, shiny side up.
Sew 1/2 seam allowance all around leaving two inches open for turning.
Turn the potholder right side out.
Fold the opening edge under and place a piece of binding tape inside.
Top-stitch a 3/8 seam on all four sides.
Sew vertical lines about 1 1/2 inches apart along the entire potholder.