Jan, this is just a contrasting color yarn that Amy was using in another video where she was demo-ing the mattress st & it's left over from the mattress st that she had demonstrated. You just begin picking up sts with the new yarn @ the point where u want the border to begin, just make sure u have a long enough tail to weave in when u are done. Helpful?!
Addicted to the Knit is Becka
"I can do everything through Him who gives me strength."