A mystical crystal skull nestled amidst a bed of crimson roses, bathed in an enchanting dark fantasy atmosphere with otherworldly magical hues, capturing an epic cinematic essence. The scene exudes an ethereal aura, with intricate details and lavish ornamentation that echo the style of Brian Froud. The artwork embodies fantasy art in ultra-high definition, showcasing vibrant colors and dynamic lighting in HDR 8k resolution, evoking a sense of mystery and wonder in a mesmerizing wallpaper composition.