I do love pretty, plain curtains.
I really don't love paying big money for curtains.
I really, really don't like sewing great big wads of fabric to try and make straight curtains.
I don't mind cheating when it comes to curtains.
I bought some really cheap flat white double bed sheets from Kmart for about $12 each. I washed them and ironed them. Then I figured out how long they needed to be and folded the hem over again on the top and bottom. That's just 2 straight straight lines on the machine. I can't go too wrong with that.
Then a bit of maths. Count the curtain rings. Work out spacing for little ribbon tabs and sew 10cm pieces of $2 a roll ribbon from the cheap shop. (cut at an angle). To complicate things slightly... the curtain you see below against the blue wall has a little 1cm overlap at each ribbon point. That is because the sheet was too wide when the curtain was shut. It looks nice with a bit of gathering.
Stitch each ribbon piece on with the machine.
Tie each ribbon to the bottom of the curtain rings. I do a bow because it is easy then to take them off and wash them.
Ta da! Lovely light curtains where I just need them for night time privacy and to stop the sun blazing in during summer afternoons.