When sewing rounded seams, all pattern guides or instructions tell you to ‘clip the curve’. In some places you even need to make ‘v’ cuts to make things lay right. I have found that using my pinking shears on the whole seam is faster, easier, and looks nicer.
On scallops you also need to go back and clip each point just to the stitching. Don’t clip through the stitching!! The points won’t turn nicely if you do not make this clip.
Try it next time you sew anything rounded that needs clipping to lay neatly. You just might find that you like it as much as I do!