Because the end of these scarves are crocheted straight across, they're not cinched ends. I'm going to start with some waist yarn rows. If you don't know about waist yarn, it provides a few functions. The first thing is that usually when you cast on, you cast on fairly loosely. And that makes your first row of stitches a bit wonky and uneven. So if you use waist yarn, that wonkyness and unevenness is in the waist yarn, which gets removed at the end of the project. But also, it helps to easily identify your stitches. So if you're going to crochet across to close the end straight across, then it's really helpful to use waist yarn of a contrasting color to your project yarn, because you'll be able to identify the stitches really easily when you come to finish off at the end.