...I feel like there's more to this. Might have to look it up. Anyways, it's an awesome piece of artwork, especially for a traditional work. I especially like how it transitions from dark at the bottom to light at the top.
The colors and brightness of the snake and the birds really manage to stand out and give a beautiful effect while contrasting with the skulls with their neutral colors and dull shades below. It's just so... Vibrant and radiant, I love it.