I’m making mine full-length, and I’m also doing long sleeves and using worsted weight yarn. It’s winter, so a sweater that I can wear with short-sleeve tees is a good idea. I’ll add my notes of how I’ve modified once I’m finished.

Using hints from MrsGillis for modifying to worsted weight yarn.
Using notes from yarnydays since hers is so cute (1300+ hearts!).

Just need to add buttons. Hopefully I can find some good ones! :)

My Sleeve Mods:
Sleeves
After separation, attach yarn to same two stitches that were hdc2tog for seperation. For me, I started with right side facing.
I did the sleeves back and forth, but I attached each row as I completed so that I wouldn’t have to do a seam at the end of the project. As it worked, it was round, but it was done in rows.
Row 1: Chain 2. Hdc around. Sl st to top of turning ch, turn. (40 hdc, including ch 2 throughout)
Row 2: Ch 2, hdc 2 tog, hdc around; in last 3 sts: hdc2tog,sk 1 st. Sl st to top of turning ch, turn. (37 hdc)
Row 3: Ch 2, hdc around, sk last st. Sl st to top of turning ch, turn. (36 hdc)
Row 4-12: Ch 2, hdc around. Sl st to top of turning ch, turn. (36 hdc)
Row 13: ch 2, hdc around, sk last st. Sl st to top of turning ch, turn. (35 hdc)
Rows 14-15: ch 2, hdc around. Sl st to top of turning ch, turn. (35 hdc)
Row 16: Ch 2, hdc 2 tog, hdc around, in last 2 sts, hdc2tog. Sl st to top of turning ch, turn. (33 hdc)
Rows 17-26: ch 2, hdc around, turn. (33 hdc)
Row 27: ch 2, hdc around, sk last st. Sl st to top of turning ch, turn. (32 hdc)
Row 28: ch 2, hdc around, sk last st. Sl st to top of turning ch, turn. (31 hdc)
Rows 29-40: ch 2, hdc around. Sl st to top of turning ch, turn. (31 hdc)
Next row is on RS!
Row 41: Work Row 1 of solid shell pattern, sl st last dc of last shell into first sc. Turn. (5 shells)
Row 42: Work Row 2 of solid shell pattern, doing 2 dc in place of last 3 dc (next to ch 3 and 2 dc). Sl st to top of ch 3. Turn. ( 4 shells, 2 halves together)
Row 43: Work row 3 of solid shell pattern. Fasten off.