Dumb pattern question from a newbie

[retroboutiques]

Hi all,
I'm a newbie...well, I've knitted before but never a sweater, always the simple stuff.
I'm working on Drops Wrap Cardigan and the armhole shaping reads as follows:
"bind off for armhole at each side every other row: 4st 1 time, etc."
I can't figure out how to bind off at both sides, when I get to the end, I do 3 bind offs, now I have a loop left on my left needle. What do I do with it? Everything I try is wrong...I'm lost....I thought I was doing so good till I got to this...
Anyone who can help, I would greatly appreciate it!

[Mirl56]

You only bind off at the beginning of the row. so bind off 4, knit to the end. then bind off 4, knit to the end.