Prompt: An etched portrait of a menacing Darth Sidious, etched into an black acrylic sheet, deep recesses, harsh shadows, sith yellow eyes glowing, cracked skin, damaged robotic respirator, dramatic lightning from below, dark side corruption, weathered, vintage style acid etching, finely detailed, textured acrylic panel, creased parchment edges, in the style of Ralph McQuarrie, Dan Mumford, Angus McBride, dark, gritty, antique, horrifying, ArtStation featured.