I disagree with the knitters who thought the pattern was unclear. I made a few modifications because of personal preference, but loved the pattern and didn’t have to improvise anything.

Gauge 19 sts = 4”
2.25” cuff (only because i wasn’t paying attention on the first one).
Increases on sleeve are m1f and m1b to avoid holes.
13” before starting sleeve gusset to hopefully get another season out of the sweater.
Knit body to 11.75” before joining arms.
Used wrap and turn for short rows.
Put buttonholes on left side instead of right, since it’s for a boy.

I would have finished this with 6 balls of yarn, but because I added extra length, I broke into ball #7 during the bind off. Soooo close!