This is what I made from the curtain fabric that I made into yarn. You will find the instructions and more details about this yarn on my older post.
I then worked 106 rows of stockinette stitch starting with a knit row.
I wet the fabric with a spray bottle and pinned it out and left to dry.
This one that is in the picture needs more streching.
My rug measures approximately 60 inches by 29 inches.