When hanging fabric to cover a closet opening, you need a fabric that's light to medium weight and drapes well. Consider using fabrics such as bark cloth, burlap (it comes in lovely colors) and chenille in your design. Replace the needle on your sewing machine with one appropriate for the fabric weight, such as a size 14/90 (see Resources), and use a durable nylon thread in your top seam to prevent unraveling as your curtain performs its daily duties.
Measure the length and width of your closet opening with a tape measure. Add 6 inches to the length to allow for a top and bottom hem. Double the measurement of the width to make a nice, full curtain that drapes well and completely hides the closet behind it.
Prewash your fabric and dry it according to the fabric recommendations. Cut it to your prepared measurements using a rotary cutter and self-healing board. You might have to sew two pieces together to get the width you need. Press it gently with a warm iron.
Lay your fabric out face down on a large table and carefully measure 2 inches in, down the length of each side. Lay the double-sided hem tape along the marks and carefully fold the fabric over it. Pin it in place, using straight pins. Place your pins as close to the raw edge as you can. This will afford you room to press your seam.
Set your iron to the recommendations of the hem tape and carefully iron down the side of each hem. Allow it to set and remove the pins. This completes your side hems.
Repeat the process along the bottom of your fabric, folding the fabric in 4 inches to give a 2-inch hem. Use the double-sided hem tape to set the seam.
Turn your fabric so you're working along the top and measure 2 inches down the length. Fold the fabric over so the raw edge is on the 2-inch mark and pin it in place in the same manner. This will be your top hem. Press it gently and run a bead of stitching along the raw edge, removing the pins as you sew.
Thread your fabric onto a tension rod and hang it in your closet opening.