Short answer
Care for trousers depends on the chosen cloth and its care label. Ask the tailor for instructions for the exact garment; follow the label and avoid heat or cleaning methods it does not permit.
Hang from the cuff by the full length, rest between wearings, and press the crease with a cloth rather than a hot iron directly.
Follow the care label for the chosen cloth and ask the tailor if the instructions are unclear. Storage, ironing, steaming and cleaning advice can vary by fibre and finish.
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