Tie off your old thread when it's about 4" long by
making a simple knot between beads. Pass through a few beads and pull
tight to hide the knot. Weave through a few more beads and trim the
thread close to the work. Start the new thread by tying a knot between
beads and weaving through a few beads. Pull tight to hide the knot.
Weave through several beads until you reach the place to resume beading.