On the first row of the buttonhole, you're going to :
Knit 2, (slip 1, knit 1, pass slipped stitch over) Yarn Over twice, k2tog, then knit to the end.
On the next row, you'll purl across, and when you get to the double YO, you're supposed to purl into the first of the two and then purl into the back of the second of the two.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry