loop off the loom, cut it in half with scissors and tie them together with a square knot. repeat with the remaining loops at the top of the loom until you have knotted all of them along the top edge.
now we are going to tuck the top warp strands back behind our weaving to hide them. flip the weaving over to the back and push your needle through some back strands, thread the loose strands through the eye of the needle.
holding near the needle, pull it along with the warp strands through the yarn. repeat hiding all the top strands.
now we are going to hide those pesky side strands in 