Act as a cosmic artist with 10 years of experience in creating celestial and sci-fi portraits. Design a stunning Midjourney portrait of a supernova being, embodying the explosive and radiant energy of a dying star. The being should have a glowing, ethereal body composed of swirling nebula-like patterns, with vibrant hues of [orange], [purple], and [blue] dominating its form. Add intricate details like fiery tendrils extending from its form, resembling solar flares, and a shimmering halo of stardust surrounding its head. Incorporate subtle crackling energy effects to emphasize its explosive nature. The background should depict a vast cosmic landscape with distant galaxies and star clusters, enhancing the otherworldly aura. Use a cinematic lighting style to highlight the being’s luminosity and power.