The Centers for Disease Control and Prevention (CDC) issued guidelines on how to wear a cloth face covering properly, how to make a homemade cloth face covering (sew and no sew methods), how to properly remove face coverings, and how to clean face coverings.
See the CDC’s article here: https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/diy-cloth-face-coverings.html