My gauge: 13 x 16 with needles 6.5mm.
Original gauge: 10 x 16

Making largest size to compensate for gauge difference.

Sleeves:
CO with larger needle (6.5mm) 38 + 6 (one patt rep extra) to get more bell in the sleeve.

Lower body:
Make largest size: CO 127 sts with larger needle (6.5mm). Having the lace part at center front and back emphasizes a belly - not flattering on a fuller body type.
I shifted the lace part as side panels and I love the result!
I knitted to 41 cm from CO to underarm and joined the sleeves. When joining the underarm sts (12 st) I knitted one sleeve st tog with one body st and then BO, this gave a tight non-stretchy underarm that I don’t like; grafting would have been much better (as the description calls for).

Upper body:
I did decreases (8 st per row) every 4-th row, 7 times total for a nice fit around my fuller bust.

I finished the neckline with needle 5 mm and garter st (1 row: one r knit, one r purl, BO purlwise).

As often the case with raglan, the back side had a tendency to slip far down - this was fixed by sewing in an extra thread (well, sturdy yarn in matching color) and gathering it a bit. This means the back panel is 4 cm shorter across the back (horizontally, shoulder to shoulder) than the front.

Next time I will insert a few short rows at the bust as well as add a few short rows at the back neck (the low neckline on the back drives me crazy).