Painting and lettering
Once the texture pastes have dried, paint the entire stretcher with acrylic paint in ivory, except for the feather relief. Paint on shades of the feather with the color ocher and also paint the corners as shading with the darker ocher. Use gold paint to make subtle accents on the feather, decorate the image with a writing curl.
And finally, "write your own Happy End": practice lettering your beautiful message on a piece of paper and then put it on your picture with your chosen font using a gold acrylic marker.