I cross-stitched the gold feathers plus some decorative dots. I’m still thinking about the large black feathers – maybe fill them in with double running stitch over two squares? That would be quicker and easier than cross-stitch, and still fit with the geometric nature of the pattern.
This is going to be a nice big design. I thought about working it at a higher count and therefore smaller, but I decided to go for impressively large. The idea is it will look bold and stylized.