What is the point of bias tape?
Bias tape is used in making piping, binding seams, finishing raw edges, etc. It is often used on the edges of quilts, placemats, and bibs, around armhole and neckline edges instead of a facing, and as a simple strap or tie for casual bags or clothing.
How do you get bias binding to lay flat?
Press your bias tape in half with wrong sides together. Pin the folded binding to your neck opening, aligning raw edges. Again, use a slight amount of tension to help the bias lay flat. The key is slight – just enough that the bias hugs the seam without pulling or becoming too narrow.