Made this up as I went along. Started by casting on 4 stitches. I increased on the right-hand side onlyon every row (m1 in 2nd stitch in from the edge) and decreased on left-hand side every other row (k2tog). That gave me a long asymmetric triangle. All the dark brown rows were worked in garter stitch. The orange rows were worked in a combination of garter stitch and different variations of mesh stitch. I kept knitting until I ran out of yarn.