Origami Style Face Mask

Completed face mask folded in half
Completed Face Mask open
Preparing the Mask
Cut 2 pieces of cotton fabric 10″ wide X 6.5″ high
(this makes an average size mask—to make a larger mask, increase the height from 6.5 to 7” and add 1/2” to the length of the elastic)
 
Fold both pcs in half and trim corners at a 45 degree angle, 2″ from the corner
Open up the pieces, lay flat, right sides together and stitch around the perimeter leaving a 4″ opening along the top edge. (This will allow you to turn the mask right side out and will serve as the opening to insert the nose wire.) Trim the corners to reduce bulk, turn right side out and press.
 
At the opening, insert the nose wire and pin in place. OR tape/fuse to the inside to keep it from
shifting.
 
Fold the bottom flap up towards the middle and fold the top flap down towards the
middle and press.
 
Add the Elastic Loops
At the sewing machine, open the mask and place one end of the elastic loop 1.5″ in from the edge (as shown in the picture). Stitch it down close to the outer edge.  (Elastic length for standard mask is 9″)

 
Insert the other elastic and stitch down. Continue sewing around the perimeter of the mask and stitch down the second elastic loop when you reach the opposite side.
Creating the 3D Shape
Fold in the upper and lower flaps towards the middle along the fold lines.
Topstitch a rectangle that will hold down part of the flaps forming the 3D mask.
Start the stitching 1” from the outer side edge and close to the horizontal edges.

Here is a link to a helpful video for mask construction (without the nose wire) https://www.youtube.com/watch?v=Pih-C3phQ6A&t=159s
 
Continue edge stitching along the long bottom edge.

When you get to the opposite (elastic side) remember to continue your topstitching 1″ in from the edge.

Pivot and finish your top stitching along the remaining top edge.

For added protection, you may wish to insert a layer of fusible interfacing to the centre section of the outer layer. Bonus! The interfacing will also add structure that will keep the mask away from your mouth.