The glow as always, is an added feature. The other thing that filled the whole motif is the starry background. Perhaps I was "Guilding the Lilly" as it may appear, but I did want to add another dimension to the whole motif.
I like the color black because it draws the eye in, and gives it a place to rest. It is also makes a powerful statement. This is also why I find the image of a feather complimentary, because it seems to express the opposite... vulnerability and fragility.