|Ideally we would all use our lovely fabrics soon after purchase to make up the pattern we had in mind. As that doesn't always happen, best practice is:
Pre-wash if that's the intention, iron without a central crease. Measure the length. Cut 2 liitle samples. Roll onto a plastic roller or card roller wrapped with acid-free tissue. Wrap in more tissue, and cloth or 'Tyvek' if your storage area is exposed to light. Add a tie with a note of length, sample, fibre content, anything else that might be helpful, and store. In a notebook duplicate that information, plus any style/pattern ideas you might have. This is a counsel of perfection I know, and I don't claim to always do it myself, but it does work, and guarantees you won't find your treasured fabric length with crease lines or fading. Oh and store somewhere dry and with minimum risk of moth attack! (Moths don't like the smell of cedar oil, lavender and artemisia/wormwood).