When I attached the neckband to the first shirt, I began to overlock near the seam on the back of the collar. When I come back around to overlap a little bit, it is now double, and tends to lose it's shape at the seam and hang down a little at the seam with a point. On the second shirt I began to overlock near the shoulder on the neckband so it is hidden. Is that the correct way, to begin the overlock, not at the back of the neck?