STRAIGHT BACK SKIRT
I made it easier for myself by cutting the back skirt on the fold as I wasn't inserting a zip or button and sewed in 4 darts creating a nice fit to the shape of the hips.
STRAIGHT SKIRT WITH INVERTED PLEATS
With creating this pattern I had to find the dart and pair up with the fourth notch and sew a dart in on both sides so they would be even. As it was cut on the fold I had to ensure that both sides would be equal so I sewed a vertical line 10cm downwards on either side and pressed open the darts. Then I had to match up and press as the paper pattern told me to reveal two pleats either side of the skirt.