Little Cornflower on a stockinette background.
 In this swatch, cast on 38 sts
Special Abbreviations
- Cornflower 1: Slip 4 with yarn in back (wyib), drop first elongated st off needle to front of work, sl the same 4 sts back to left-hand needle, pick up dropped st knitwise and sl it onto left-hand needle; then k2tog tbl (the elongated st and the next st), k3, sl 3 wyib dropping extra wraps, drop last elongated st off needle to front, sl 4 wyib, pick up dropped st onto left-hand needle, sl the same 4 sts back to left-hand needle, k3, k2tog.
- Cornflower 2: Sl 3 wyib, drop next elongated st off needle to front of work, sl the same 3 sts back to left-hand needle, pick up dropped st knitwise and sl it onto left-hand needle; then k2tog tbl, k2, sl 1 wyib, drop next elongated st off needle to front, sl 3 wyib, pick up dropped st onto left-hand needle, sl the same 3 sts back to left-hand needle, k2, k2tog.

Cast on a multiple of 18 sts +2.
Row 1: K5, * (k1, yo, k1, yo, k1) in next st, k17; repeat from * to last 15 sts, (k1, yo, k1, yo, k1) in next st, k14.
Row 2: P14, * p5 wrapping yarn twice for each st, p17; repeat from * to last 10 sts, p5 wrapping yarn twice for each st, p5.
Row 3: K1, * Cornflower 1, k9; repeat from * to last st, k1.
Row 4: P14, * sl 3 wyif, p17; repeat from * to last 8 sts, sl3 wyif, p5.
Row 5: K2, * Cornflower 2, k11; repeat from * to end.
Row 6: Purl all sts.
Row 7: K14, * (k1, yo, k1, yo, k1) in next st, k17; repeat from * to last 6 sts, (k1, yo, k1, yo, k1) in next st, k5.
Row 8: P5, * p5 wrapping yarn twice for each st, p17; repeat from * to last 19 sts, p5 wrapping yarn twice for each st, p14.
Row 9: K10, * Cornflower 1, k9; repeat from * to last st, k1.
Row 10: P5,* sl 3 wyif, p17; repeat from * to last 17 sts, sl 3 wyif, p14.
Row 11: K11, * Cornflower 2, k11; repet from * to last 2 sts, k2.
Row 12: Purl all sts.
Repeat these 12 rows

Knitting abbreviations:
Knit: K | Purl: P | Slip stitch as if to purl: Sl
With yarn in back: Wyib |  With yarn in front: Wyif
Knit 2 sts together: K2tog | Knit 2 sts together through back loop: K2tog tbl

In the video, cast on 13 sts. It is more like a quick-start guide that will help you how to knit this stitch.
Row 1: Knit all sts.
Row 2: Purl all sts,
Row 3: K6, (k1, yo, k1, yo, k1) all in next st, k6.
Row 4: P6, p5 wrapping yarn twice for each st, p6.
Row 5: K2, Cornflower 1, k2.
Row 6: P5, sl 3 wyif, p5.
Row 7: K3, Cornflower 2, k3.
Row 8: Purl all sts.