For the child that can't just wear any face mask.  Can be made in an Adult Size.
Outer Layer - 100% Cotton White Daisy Flower
Inner Layer - Italian White Stretch Bullseye Pique
4" x 6-6.5" Approximately 6" Elastic Approximately
Machine wash delicate.  Put mask in lingerie bag.  If needs ironing, use a cloth in between mask and iron.  No dryer.