Then approx. 22" from the inside start cutting almost like you are taking out a triangle piece to meet the bottom outside corner. Hem all away around the curtain. On the top make approx. 2 1/2" open for a curtain rod to go through.
I actually bought this material to match some curtains that I have in my dining room, I think the match is perfect.The girl on ebay hangs hers with jute on a nail and I tie them back with jute, The tying back is what gives the scalloped look. I hope this helps, If I can make them anyone can. Let me know how you get along or if I can help. Believe me I am no professional, just out to save money whereever I can. To be on the safe side you may want to try 3 yds. of material. And you can change the size depending on your window measurements.I love the primitive look of these curtains. I would love to see pictures if anyone else decides to make them.