She was wearing a long skirt with interesting details and when I asked about it she cut out a piece of paper to show me how to make it "freehand," no pattern necessary. Below is the "square" with the waist cut out and a rectangle added under my dog's nose.
The square is the size of the fabric width, with rectangles added to each edge, then sewn into points to create tucks that can then be tacked up.
First you make a square, then fold it into quarters and cut out the waist to your specifications. I cut larger than my waist so I could pull up the skirt over my hips. Miraculously, I made almost a perfect circle!
I used my overlocker to stabilize the fraying waistline, gathered the edge and stitched it to a very wide piece of elastic for the waistband.
The fabric I used was so wide, at 60" that the square corners almost touched the floor before I put on the rectangles. I think a narrower fabric might create higher, more visible and interesting tucks.
I measured out my rectangles to be 60" by 12" and sewed them on along the edges of the square. Next I stitched their short edges
together at the three point corners. This created length that did drag on the ground, so I took each three point corner angle and tacked it up 12" inside the skirt.