Embroidered Curtains

Clean it the delicate / gentle cycle, in the same way you would treat a blouse Nice. Fresh water, mild liquid detergent. Tumble dry delicate for some time to remove all wrinkles, then line dry.
Be aware that if the embroidery is red or blue, like embroidery thread colors may bleed onto the fabric shower curtain. If you think there may be risk of it, does it take to dry cleaning or use in your dryer Dryel home to clean the shower curtain.

I would wash in the gentle cycle with a tiny bit of soap in cold water and hang to dry

Depends on what it is. If it's cotton, I try it on a
put in fresh and cold water. If it's silk, I'd take Dry
vacuum.