Measure the width of the window inside the window casing. Double the measurement to determine the panel width. The extra fabric provides a ruffled look to the curtains once hung.
Measure the height of the bottom half of the window. Add 10 inches to this measurement to determine the fabric length.
Cut the sheer fabric to the size of your width and length measurements.
Fold in the side edges of the fabric 1/4 inch toward the wrong side of the fabric or the back of the curtain. Fold over a second time, trapping the raw edge of the fabric inside the fold. Pin in place.
Sew along the fold up each side of the curtain on the sewing machine using matching thread. Trim the excess thread.
Fold the bottom of the curtain 1/2 inch in, then fold over a second time to trap the raw edge inside. Sew along the fold, and trim the excess thread.
Fold the top 5 inches of the curtain down. Fold under the raw edge by 1/2 inch, and pin it in place.
Sew along the bottom of the fold where the raw edge of the fabric is folded under. Measure down 2 inches from the top of the curtain, and sew across the top of the curtain at the 2-inch mark, making a pocket between the two stitch lines.
Slide the curtain rod into the pocket between the two stitch lines. The excess fabric at the top of the curtain creates a ruffled header above the rod. Hang the rod in the window.