¡Genial! The steampunk style can be really fascinating to represent the Elric brothers from Fullmetal Alchemist. Here is a more specific prompt you could use: "Design a steampunk style poster of the Elric brothers from Fullmetal Alchemist. In the middle, places Edward and Alphonse Elric in dynamic, purposeful poses, surrounded by an industrial environment full of gears, steam pipes and bright lights. Be sure to include details such as alchemy symbols on their equipment and an atmosphere that reflects the series' signature combination of magic and technology.."

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