Today I gave her a new makeover:
It doesn't show well in the picture, but all the stars and highlights are silver, not white, so she's all shimmery and sparkly. I had every intention of painting the entire cat blue and starry, but then the nighttime-forest thing happened at the bottom, and the clouds, and she became an entire night scene.
The highlights along her angles would NOT come out with a brush, or a pen (that got painted over like three times, actually), so I ended up just rubbing silver paint onto the edges with my fingers. When in doubt: fingerpainting! LOL.