In our last pattern cutting lesson we started by looking at bias binding. I have used this technique to create straps but before now I haven't used it as a substitute to a facing to finish an edge.
Here is how I did it:
Cut a strip of fabric on the bias.
Place it onto the edge you are sewing it so that the right side of the bias strip it against the wrong side of the main fabric.
Sew a 1cm seam allowance.
Press the bias strip up and then fold the rough edge under and press.
Fold the bias strip again so that it covers the stitch line on the other side, press.
Sew the strip down as close to the edge as possible.
Here is another example of a bias binding on the opposite curve, the steps are the same.