Duplicate stitched the letters.

This very simple pattern is hard to read so I’m noting it here.
CO 24.
3 rnds twisted 1x1 rib. (More rounds for turtleneck look)
PM: (k2, pm, k8, pm, k2) on each side.
Inc rnd: inc on ea side of ea marker, total 8 per rnd.
Knit round.
Repeat inc & k rnds 4x total.
Divide for sleeves: 12 sts per sleeve, 32 sts for body.
10-12 rnds st st
(For smaller torso hem look, dec 4sts in last st st rnd)
2 rnds 1x1 twisted rib
BO in pattern
Sleeves: 10rnds st st decreasing 2 sts on last row, cuff same as body, (dec 2 sts on last st st rnd for smaller wrist cuff look)

Sew under the arms so the arms angle down a bit.

Letters as here.