Figuring headband length measurement for pattern

Take head circumference measurement and make note of that number.  This is the headband length pattern measurement.

Figuring headband width measurement for pattern

If a rolled hem is used, and there is a 1" finished headband width, then add to pattern 1/2" to each side.  This is used to roll over two 1/4" folds on each side so that the total headband pattern width measurement is 2". 

Measure horizontally from left to right edge (near top) the headband width measurement (red dot).

Measure down headband length measurement and place mark (blue dot).

Draw a straight horizontal and vertical line at these markings to connect them into a rectangle.

Label one end with "fold." 

Cut out. 

Lay paper pattern on top of fabric.  Match "fold" side of paper pattern to folded side of fabric. 

Pin

Cut out

At long sides of raw edges, finish with a serged rolled hem (if preferred)

Or sew a rolled hem by using a sewing machine. 

Shirring

Sew with elastic thread down center of headband.

Stop sewing row of elastic 1/2" from each end.

When row is completed, lock stitch, leave needle in fabric, lift foot up and pivot. 

Move over to one side about 1/4" and start new row.  

When finished with 2nd row sew another row on the other side of center row. 

When finished with the desired number of rows backstitch several times to lock elastic thread and cut.

  Iron down center of headband on right side to flatten a bit. 

Sewing back seam

Try headband on to check for fit.

Match up ends right sides together, pin.

Sew ends together to make back seam. 

Serge

Fold seam over so it lays flat.

Sew seam flat.