With main color (MC) and larger needles, cast on ... one round. [Knit one round, purl one round] three times. Bind off loosely, marking the bound off stitches on either side of stitch markers ...

If you're looking for a knitting project perfect for ... tip is to use the yarn tail from your cast on edge as a handy marker. You could use stitch markers or even a piece of contrast-coloured ...