Hi this is Peggy. hope the article help you make the ceiling drapes you want. How to Make Ceiling Drapes | Hunker
Attach to the ceiling beam or fan at the center of the room, allowing the fabric to drape and billow. Secure the drape to the wall or to the next ceiling fan or beam. Continue installing the ceiling drapesuntil the arrangement is symmetrical and pleasing to the eye.
Are you asking for instructions on how to make drapes that are tall enough to reach ceiling to floor, or are you wanting to know how to install drapes on the ceiling, like a canopy?
Here is an article that might help you - https://www.hunker.com/13411695/how-to-make-ceiling-drapes