At first glance, this design may appear unbalanced because of the big white space. However, in this case I think this negative space lets the viewer focus on the top of the image and adds simplicity that balances out the busy and colorful top.
Cleopatra metallic wig hairdress in chrome or gold egyptian goddess wig bob hairpiece bobcut headpiece metal futuristic Mirror PVC--another way to manipulate light onstage, and flexible enough to be made into a variety of pieces.
This is the way the cloth could work on the bird puppets. Perhaps it looks like the sail cloth, but a more translucent fabric so that the actors can see through it (tho it need not be tulle as pictured here).