Almost all pillows, cushions and upholstery is finished with fabric covered welt cord/piping. Here is a simple tutorial for you to see how easy it is to make.
what you need:
cord to cover
strips of fabric, cut on the bias, sewn together
what you do:
1. cut fabric on the bias (diagonally) into strips
I use 5/32" cording so I cut 1 3/4" strips of fabric. I couldn't cut these strips on the bias because I didn't have enough...