Cut the Shirting to the length of your window allowing an extra 25cm for the hemming. Sew the side seams first then sew the Pom Pom Trim down one seam. Create a rod pocket at the top to allow for your curtain rod. Then hem the bottom. You will need an extra metre of the trim to use as your cord.
You can make these fabulous curtains for under $25 a drop.