Twining is used to space out and secure the warp. Since the warp is wrapped around the frame the thickness of the wood creates a gap or space between the warp threads. Twining brings together the two layers of warp threads so that the are at the same height. I used the same colour yarn that I'll be using for the background. Working from left to right, simply take a length of yarn, loop it around the warp and twist around each warp thread. As you can see from image 4, the warp threads are now lined up and should be evenly spaced.