Press self adhesive hooks into the ceiling an equal distance away from each other. They can be close together for a dense looking curtain of light or about a foot away from each other for a more subtle light curtain look.
Hang clear twinkle lights over the hooks. Make sure the you have extension cords or power strips handy to accommodate all of the strings of twinkle lights. Avoid color lights, which will look less elegant and more suited for Christmas.
Secure the fabric using clear push pins placed directly above the hooks. The fabric should fall directly in front of the lights without touching them but should be close enough to the lights that when you are standing away from the decoration, it gives the illusion of a lighted fabric curtain.