I’m improvising this pullover testing it over Bruno.
At the moment i’ve folloved this instructions:
With circular needle cast on 80 stitches. Join for working in the round.
Knit first row and put a marker after 30 stitches, 10 stitches, 30 stitches, and 10 stitches. 4 markers in total. I have the first marker in another colour in the beginning of the row.

Row one: knit 1, increase a stitch from left needle a new stitch, knit until last stitch before marker, increase a stitch from right needle. Repeat 3 times more.
Row two: knit to the end of round.

Repeat rows one and two 30 times until have 90 stitches, 70 stitches, 90 stitches, 70 stitches.

Leave pendant stitches from sleeves (70 stitches for left sleeve and other 70 stitches for right sleeve).

Join stitches from front and back (90 stitches+90 stitches=180 stitches). Work in stockinette (knit all rows in circular) until obtain 37cm length.

Knit 14 rows as follows: * knit 2 , purl 2 , repeat from to * until the of row.

Bind off with judy’s surprisingly stretchy bind off method.

For the arms take the 70 stitches.
rows 1-5: Knit all.
row 7: k1, k2t, knit until 3 stitches before the end of row, 2kt, k1.
row 8-12:Knit all
row 13: k1, k2t, knit until 3 stitches before the end of row, 2kt, k1.
row 14-18: Knit all
row 19: same as 7
row 20-24: knit all
row 25: same as 7
row 26-30: Knit all
row 31:same as 7
row 32-36: knit all
row 37: same as 7
row 38-42: knit all
row 43: same as 7
row 44-48: knit all
row 49: same as 7
row 50-54: knit all
row 55: same as 7
row 56-60: knit all
row 61: same as 7.
row 62-66: knit all
row 67: same as 7.
row 68-72: knit all
row 73: same as 7.
row 74-78: knit all
row 79: same as 7
row 80-88: knit all
rows 89-102: k2-p2 repeat until the end of row

Bind off with judy’s surprisingly stretchy bind-off.

Neck:

CO 80 stitches:
Rows 1-38 (18cm aprox): k2-p2
Bind off with judy’s surprisingly stretchy bind-off.