Then, you will pin each mask creating pleats.

The pleats will make the mask more breathable and comfortable to wear.

https://www.youtube.com/watch?v=FW1TCQDN4do

How To Make A Batch Of Masks - Cloth Mask - Elastic Earpiece Mask

Image By: Thoughtful Creativity Craft, Sew, DIY Via YouTube

How To Make DIY Mask - Sew Masks In Bulk - Wear A Mask

Pin Pleats In Mask - Sew A Lot Of Masks At One Time - Mask Tutorial