My daughter Elliot was a peacock for Halloween.  I made a tutu out of green, blue and purple tulle.  I cut each layer and color to different lengths, in order to make it look like feathers.  I sewed ribbon to the top layer of tulle to look like the shaft of the peacock feather.  I sewed layers of felt cut into a teardrop shape to create the “eyes” of the feather.  I also sewed these “eyes” to a store bought shirt.  I put a lining in the tutu so that the skirt would lay flat against her leggings, and give the tutu some body.