To shape a beret, dunk it in warm water. Don’t use hot water since it can cause wool to shrink. Once it is damp and pliable, place the beret on top of your head and adjust for a proper fitting. If you’ve seen how snug-fitting military berets are, it’s because they have a procedure to make them fit. Contrary to what is worn as a fashion piece, military berets are more tedious to take care of.