: Locate the last slip knot or loop where the tail was pulled through and pull the yarn back through it to "re-open" that final stitch. Reverse One Stitch at a Time : Find the strand that was passed over the current stitch.
Removing a bind-off (also known as a cast-off) in knitting involves carefully reversing the steps used to secure the edge. Depending on whether you have already cut the yarn, the process varies slightly. Removing a Bind Off
If you have already finished the piece and woven in the ends: : Locate the last slip knot or loop