the apron pieces right sides of the fabric together with the straps between them.
stitch the apron pieces together but leave the top open.
cut small triangles away from the curve and turn the apron with the right side of the fabric to the outside.
fold at the top the seam allowance inside and press all seams flat.
put the neck strap with the d-ring between the apron and stitch the apron narrow on the side.
this is excellent! thank you for sharing this, and for including the pattern. 