With the nose and mouth pieces folded in half along the center, RIGHT sides together, stitch the top and bottom darts as shown. Repeat for the other nose and mouth pieces.
Align the bottom edge of the sewn knitted nose and mouth piece with the top edge of the neck piece at the center cut out. Pin in place and sew the pieces together, pivoting at the corner. Remove the pin.
Stitch the opposite side of the center panel in the same way until it is fully stitched.
Next, stack the two woven nose and mouth pieces together with the RIGHT sides facing up and ensuring the top edges are aligned.
Baste stitch them together with a narrow stitch.
Now sew the nose and mouth panel piece to the other neck piece in the same way as the knitted piece.
Join the inner piece to the ouer piece along the top edge: place the two sides together with RIGHT sides together and stitch the top edge of the center nose panel.
Cut a piece of elastic 12” long. Sew the elastic along the top edge of the mask scarf as you sew the two layers together. Gently stretch the elastic as you sew to ensure it is sewn evenly around the neck piece.
Turn the lining towards the inside and finish by stitching the bottom of the two nose/mouth panels together.
Additionally, you can stitch the two neck pieces together at the center back bottom just to hold in place.