Here is how I am making face masks. These masks have a drawstring tie along the top and bottom that allow for a tighter fit across your face and under your chin.
I am using 100% cotton, quilting weight fabric. A half yard of quilting cotton will make 2 face masks. I prewash the fabric before making masks, so they will not shrink after they are made.
Cut 1 piece of fabric 10″ x 15″
Cut 2 pieces 1 1/2″ x width of the fabric (42″)
If you have any fusible, or even non fusible, light weight non-woven interfacing cut a 10″ x 15″ of that as well. This will add a bit more protection against viruses.
For each of the two 1 1/2″ x width of fabric strips for the ask ties:
Fold and press a 1/4″ of fabric on each short end, then fold and iron the two long raw edges towards the center. Next fold the tie in half and press. Sew a seam close to the edge to finish the tie.

For the Mask:
If using interfacing layer and press the interfacing to the wrong side of the 10″ x 15″ piece of fabric.

Fold the mask fabric in half, right sides together, so the piece measures 7 1/2″ x 10″. Sew a 1/2″ wide seam along the long raw edges. Press this piece so that the seam is in the middle of the mask.

Next sew the side seams. On one side start 5/8″ from the edge and sew towards the center, stopping about 1″ from the center. Repeat this on the other end of this side, Be sure to secure your stitching when you start and stop each of these seams. You are leaving a hole in this side so that you can turn everything inside out!

For the other side start your seam 5/8″ in and stop 5/8″ before the end, securing the stitches when you start and stop. Starting and stopping 5/8″ away from the edges leaves openings for the drawstring casings.
Next pull your drawstrings through the top and bottom openings of the mask. Use a safety pin to make this an easier task.

Once the drawstrings are in place, make sure they are centered, and then tack them down in the center of the mask to make sure they stay in place when laundered.

Then sew along the edge of the two sides to close the opening and help hold the shape of the mask. Secure all seams.
Next sew the drawstring channels. Sew 5/8″ away from the long edge to do this. Secure all seams.

Now press two 1/2″ pleats as shown in the photo. Make sure the folds are set up so mask will pop out in the front for your nose! This picture shows the BACK of the mask.

Sew a 5/8″ seam along each side to hold the pleats in place.

You have a face mask that should give you some protection also protect your fellow humans if you are unwittingly walking about with a virus!!
And, if you have a double chin, no one will know!!

I am updating this post with some steps for leaving an opening in the back of your mask to add a filter. I read an article that says that blue shop towels make a great filter, so here you go:
Cut pieces as above, omitting the interfacing. For this version you do not need to use interfacing, because you will be using a disposable filter each time you use your mask.
Make the ties as indicated above. Then sew the mask.
Before folding the mask piece in half, I folded over the 10″ long raw edges twice and then sewed a seam close to the edges. Then I folded the piece in half and overlapped the edges. Next I sewed the sides closed.


After turning the mask right side out, I finished the mask following the same procedures above that I used for the mask with no opening.
Before wearing your mask insert a filter. I plan to use a blue shop towel. I cut the towel in half, fold one of the halves in half and then insert it into the mask.

Remember once you have your mask on: Wash your hands if you touch the mask after being exposed to any germs! Remember to carefully dispose of the filter after each use, and then wash your hands!!
Wash your hands!!!