Steam the hat gently to soften the felt or straw
Hold the hat over steam for a few seconds at a time
Use clean hands to mold the crown into the desired shape
Press the brim into the preferred curve or flatness
Work slowly and reshape in small increments
Let the hat cool and dry while holding its new shape
Use a hat form, towel, or clean surface to maintain shape while drying
Repeat steaming and shaping if needed
Avoid soaking the hat
Avoid excessive heat
Store the hat on a proper hat rack or upside down on the crown
Use a professional hat shaper for stubborn or valuable hats