Measure from top edge of baseboard to ceiling to determine headboard height. Add 12 inches to this measurement to determine length to cut fabric panels. Cut two equal lengths from fabric.
Stack fabric panels with right sides together and pin side seams, making sure to align pattern if using a printed fabric. Sew down entire edge of fabric on both sides, creating a long sleeve.
Measure and mark center of one length of fabric, then cut, creating two side panels. Iron seams open on backside of fabric.
Using headboard dimensions, cut plywood and 1x4 boards to size. Position plywood to create headboard size then attach four 1x4 boards along plywood edges with screws to create outer frame.