A painting of a woman with a snake on her head

A celestial serpent with tendrils of mist and pearlscent eyes, created in the style of Art Nouveau, featuring intricate line work and organic shapes. The image should be a digital illustration with a dreamlike quality and vibrant colors, reminiscent of Alphonse Mucha's artwork. The serpent should be depicted in a graceful pose, coiling around itself, with a serene expression on its face. The background should be a soft gradient of pastel colors, creating a sense of ethereal beauty.