Now here is an interesting one! For the background I used up some neon mascara that I've been hoarding for years! They worked terrible as a beauty product but perfect for the use of a bright pigment!
The only thing with this that I didn't expect until I started drawing on the feathers is that, even though the background is completely dry and smooth, it does have a waxy component to it. I couldn't draw easily on top of the black acrylic because it scratched away the surface which is why I used my embossing tools for scratching tools at the end.