I missed a buttonhole on my Romy cardigan.
It's one of those patterns that has many, many "at the same time" instructions. The buttonhole ones are given at the very beginning but later in the pattern she reminds you where to put in the first two and I thought she might remind me where to put in the third. But nope! No reminder. And I didn't notice until I was about 8 very long yoke rows past where the third buttonhole should have gone.
I did not want to rip back my knitting so I decided to just drop the four stitches that are used for the buttonhole:
And then form the buttonhole using the pattern instructions (it's a two-row, double yarnover buttonhole), and ladder my stitches back up. It was a little tight working the instructions with the short ladder I'd unravelled, but very do-able.
After forming the buttonhole I was too lazy to ladder them up as "K1, P2, K1" (which I find a royal pain to do at once) so I picked them all back up as "K4" and then laddered the middle two back down, turned my work, and did them as knits with a crochet hook on the back side. It was just faster this way, and required no thinking.
When it was all done, the buttonhole looked pretty much like it had never been forgotten:
And I learned a lesson that I hope will keep me from forgetting the next five! (fingers crossed)