Then I joined the two facings together on the next row by working together one stitch from each needle (like a 3-needle BO, without the BO). From there, I could easily have knit my collar from the top town, adding increases to allow it to curve around the neckline and lay flat. But that would mean that my motifs would be worked upside down. As in, knitted stitches that look like "A" instead of "V". So "Easy" was not to be. Surprising Nobody.
Instead, I worked my collar separately, from the bottom up, creating first a hemmed edge, working a few decreases to make it curve, then joining for knitting in rounds with a center steek. Then I knitted my motifs (the birds from the chart). After that, I decreased the last round down to the same number of stitches in my neckline. I cut the steek, knit facings to cover it, and then grafted the finished collar to the neckline.