I like the way color flows in a bargello quilt pattern and wanted to design something that was a less traditional bargello pattern. I liked the idea of a spiral. One didn't seem sufficient so I reversed a second spiral and off-set it on the ground fabric. I chose a grey scale for the spirals and a muted orange with soft grey for the background. Once I had the line of the spiral established it was easy to place the strips. The line was first drawn on graph paper. Then quarter inch squares of paper strips were pinned to a piece of foam core to determine if it would translate into a true spiral.
I used a 12 step value scale and made the initial strips one inch wide. These were then sewn together and cut into half inch, one inch and two inch strips to sew together for the spirals. These are the finished sizes not cut sizes. About half of the fabric needed to be used on the reverse side in order to get all of the values.