Video tutorial :

To make the Stars, Purl 3 stitches together, leaving stitches on left needle; make a Yarn Over, and Purl the same 3 stitches together again, and then drop off left needle

Cast on multiples of 4 sts + 1 st

Row 1 (RS): Knit all stitches

Row 2: P1, *Make Star, P1* Repeat from * to end

Row3: Knit all stitches

Row 4: P3, Make Star, *P1, Make Star* Repeat from * to last 3 stitches, P3

Repeat 4 rows for pattern.