Mods:
4 short rows around back and sleeves before starting yoke colour work.
4 short rows at back of the neck over about half the sts in red.
Ripped back and made additional decreases to neck as it originally did not sit flat - down to 124sts before short rows, 100sts before the moss st collar.

Overall fit is good on the body, looser on the sleeves. The sleeves have stretched more too (my first superwash yarn project) so I have to wear the cuffs folded.

Overall really quick knit and simple project, the yoke colour work is really effective. The jumper is a bit thinner than I expected so maybe this is a bit more of a spring/autumn jumper.