Isekalduv means ‘self-slanting’ in Estonian. It is a simple asymmetrical triangular shawl with one elongated and pointed end. The shape is achieved through increases at one edge but also because the stitch pattern is biased.
You can use any yarn you want, still, I recommend lighter yarns (fingering and light fingering weight). Do swatch and be sure the fabric is open and airy. The pattern requires much larger needles than indicated on the yarn label. Try out various sizes and see what looks good.