Notes from the youtube video.

Ryo = reverse yarn over

Cast on 76 sts.

Rows 1-6 : k all

Row 7 (RS):
k7, ryo-k2tog (until 7 sts are left), k1-k2tog-ryo-k4 (buttonhole and band)

Row 8 (WS): k7, p all (purl to yos through backloop), k7

Row 9 (RS):
k7, ryo, k12, ryo, k2, ryo, --> sleeve
k18, ryo, k2, ryo, --> back
k12, ryo, k2, ryo, --> sleeve
k14, ryo, k7 --> front

Row 11 (RS):
k7, ryo, K14, ryo, k2, ryo,
k20, ryo, k2, ryo,
k14, ryo, k2, ryo,
k16, ryo, k7

Row 13 (RS):
k7, ryo, K16, ryo, k2, ryo,
k22, ryo, k2, ryo,
k16, ryo, k2, ryo,
k18, ryo, k7

Row 15 (RS):
k7, ryo, k18, ryo, k2, ryo,
k24, ryo, k2, ryo,
k18, ryo, k2, ryo
k4, p1, k3, p4, k3, p1, k4, ryo, k7

Row 16 (WS):
k7, p5, k1, p3, k4, p3, k1, p to end, k7

Row 17 (RS):
k7, ryo, k20, ryo, k2, ryo,
k26, ryo, k2, ryo,
k20, ryo, k2, ryo,
k5, p1, ryo, k3tog, ryo, p4, ryo, k3tog, ryo, p1, k5, ryo, k7

Row 18 (WS):
k7, p6, k1, p3, k4, p3, k1, p to end, k7

Row 19 (RS):
k7, ryo, k22, ryo, k2, ryo,
k28, ryo, k2, ryo,
k22, ryo, k2, ryo,
k6, p1, k3, p4, k3, p1, k6, ryo, k7

Row 20 (WS):
k7, p7, k1, p3, k4, p3, k1, p to end, k7

Row 21 (RS):
k7, ryo, k24, ryo, k2, ryo,
k30, ryo, k2, ryo,
k24, ryo, k2, ryo,
k7, p1, ryo, k3tog, ryo, p4, ryo, k3tog, ryo, p1, k7, ryo, k7

etc.

Next row (RS):
k7, ryo, k1, (ryo-k2tog) 18 times, k1, ryo, k2, ryo,
k the back, ryo, k2, ryo,
k1, (ryo-k2tog) 18 times, k1, ryo, k2, ryo, k7
k14, p1, k3, p4, k3, p1, k14, ryo, k7

Next row (WS): as usual

Next row (RS):
k7, ryo, k40, ryo, k2, ryo, etc.

Next row (WS):
k7, purl up to after the k2 of the increase (after the k2 of ryo, k2, ryo),
knit the sleeve (from ryo to ryo), purl to end, k7

Continue until 3 ridges for the sleeves

Next row (RS):
No more ryo, knit to end

Next row (WS):
k7, purl front and back but cast of (knitting) the sleeves

Next row (RS):
k6, kfb, kfb, k to other armhole, kfb, kfb, knit front following the pattern

Continue body.

RS: k7, ryo-k2tog (repeat to end), k7

WS: Bind off (knitwise).

Height (from shoulder to bottom) : 33 cm
Width (under arms) : 25 cm

If I do it again:
* use US4 and US6