I teach a beginning binding class on a regular basis, and we bind a scalloped edge. We difinitly cut on the bias. We cut the strips 2 1/4" wide and sew them together on the diagonal. You don't want to cut into the inner corners, or they will flap in different directions. There's lots of tips in my tutorial.
Good Luck!
Annette
Last edited by QuiltnNan; 03-05-2014 at 05:01 AM.