I agree with QuiltE! The on point crosshatch will be the perfect fill for all those feathers. Labor intensive but worth it. They make painters tape in 1/2" so you won't have to tediously mark them out. And stop them about 1/4 from the feather motifs and stitch over to your new c/h line, they will form a lovely echo around both the border and the center medallion. This is what they did in the pinterest pic you linked and you can see how much it emphasizes the overall design. Looking forward to following your progress on this.