I ended up using a simple black singlet top and skirt as the basis for all my feathers. For the skirt I bought a few black feather boas and stitched them to the skirt with fishing line and did the same for the peacock feathers on my front and back. In my hair I just arranged some feathers and used bobby pins to secure them.
It was a pretty simple DIY but I was really pleased with the end result :)