When To Bind-Off
Tunisian Crochet is often revered as a mash-up between crochet and knitting. When I explain it to others I tell them, "It's like knitting and crochet had a baby." I'm sure there are plenty who would disagree because of a number of technicalities, but the bind-off is one aspect that proves the statement to be at least partially true. Exactly as in the world of knitting, in Tunisian Crochet, you will want to bind-off your work in order to achieve this nice, finished edge and avoid gaps or jagged places in your piece.
It will only take a few moments a quick test swatch to learn this valuable skill. If you are brand new to this craft, jump over to my how-to on The Tunisian Simple Stitch to work up a quick test swatch. That post will also familiarize you with the terminology used in this and future Tunisian Crochet tutorials by KatKnap. Then, come back here to learn the bind-off technique.
That's all there is to it! Continue pulling up one loop at a time through each vertical bar across your work, and pulling the new loop through the other loop. Simple, neat, finished!