Myriad is perfectly suited to window sheers, and makes for the most beautiful, long, airy curtains possible. Your curtain panels will arrive perfectly flat and crisp. Hang them straight away, or wash in cold on a delicate cycle with a mild detergent (or none) to shrink them to their final size and to release the wavy texture for which linen is so loved. Ironing will return them to crispness, see which look you prefer.