This is a great refined summer sewing project for a light cotton voile border print. The first step is to complete the piped collar and stand. Stylearc has a really straightforward tutorial on constructing the collar and stand here. For the piping I have some quick tips below:
First, interface both sides of the collar if you are working with sheer cotton - the seam allowances will show through if you don’t. I used a medium weight siri (buy here).
When you sit down to attach the piping to the upper collar - start sewing (try not to use pins) and right before you reach the curve of the collar - stop, drop needle into fabric, clip the length of piping that will wrap the curve, clip about 1/2 to 3/4 into the tape, if you clip too far the notches will prevent a smooth curve, continue to sew SLOWLY placing the piping around the curve as you sew - make sure to stitch close to the piping as this line will be the guide.
When you sew the under and upper collars together, place the upper piped collar on top of the under collar using the stitching line (that attached the piping) as your guide. This will give you a perfect piped edge with no tape showing.