|This may be old to most of you, but I just learned a trick that has worked everytime I tested it. If you have a straigt stitch only machine you should hold your loose threads behind the foot when you put the presser foot down and begin to sew. If you have a zigzag machine (even if you are straight stitching on it) hold the threads to the left of the foot. The feed dogs catch the thread and keep it from making a nest! REALLY!
I learned on an old straight stitch machine and was always told to put the threads behind the foot. WHat did I know that that instruction was predicated upon my using a straight stitch only machine!!! Try it and let me know if it works for you, too!