Please note ‘spin dry’ refers to a spinning cycle in the WASHING machine, NOT the dryer.
You can briefly put the jacket on when damp, to give it (your) body, then hang to dry. Once fully dry the denim will be quite stiff from the starch, which is a good thing as this ‘sets’ some creases. You’re on your way to a pleasing patina after repeat wear.
Those who have an issue with stiff denim should reconsider, as demand for ‘soft denim’ lead to the plague of stone washed garments, and acid wash in the 80′s.
The Sportsman “Ranch Blouse” comes UN-WASHED and “oversized” (ie. will ‘shrink to fit’) so that the measurements match the labeling AFTER an original cold soak/line dry.