I started by cutting my sheets down to size. I left the width (so I wouldn’t have to hem the sides) and cut it to length. For the bottom color (my grey) I cut it 13″ tall. For the top color (my white) I cut it 62″ tall. Then with the cut sides together (the hemmed edges will be the top and bottom of the curtain) I laid the two pieces right sides together and pinned. Then I sewed them together. This step will get you the color block look.
Then I added a ruffle. I made the ruffle by cutting on the bias. By cutting on the bias, your fabric will not ravel. The edges may soften, but they wont ravel or fray. You cut on the bias by cutting the fabric at a 45 degree angle from the salvaged edge. I measured this on my cutting board. I like the look of the edges when they soften. But if you don’t want to do this you can double the width, fold in half, sew shut, then turn inside out for finished edges.
I cut the ruffle a width of 4″ (remember to double that if you are not cutting on the bias). When I ruffle anything I usually double the length. So you need the length of the ruffle to be 132″.
Of course I am not going to get 1 piece that is 132″ long. So after cutting on the bias I lined my 45 degree edges up, right sides together and pinned. Then sew on the cut edges. Repeat until you get a piece that is around 132″ long.