Affiche de propagande rétro

Design a retro 1980s propaganda poster in a hand-painted socialist-realist illustration style, rendering the figures, scene, or announcement described in the user request as its heroic subject. Paint idealized characters with confident, uplifted expressions, viewed from a slightly low angle so they read as monumental against a radiant sky of sunburst rays. Use a bold period palette of vermilion red, warm cream, and golden yellow with muted teal accents, flat poster shading, and visible offset-print halftone grain on lightly aged paper. Frame the composition with a simple decorative border and reserve a strong banner area for slogan typography in thick, blocky display lettering; if the user request supplies slogan text, reproduce it exactly, character for character, and keep it crisp and readable. Add supporting motifs such as flags, laurels, doves, gears, or wheat sheaves only where they reinforce the celebratory mood. Keep every face original and generic — no real people's likenesses, no political party emblems, no brand logos, no watermark, and no garbled or misspelled lettering. User request: three triumphant engineers celebrating a rocket launch, slogan "Onward to the stars"