Generate a photorealistic bust portrait of a jubilant graduate in a cap and gown. The setting is classroom with tiered seating, The graduate stands confidently, their face radiating a beaming smile that conveys the pride and excitement of academic completion. The atmosphere is one of celebration and joy, with soft lighting that enhances the mood without overshadowing the graduate's triumphant expression. The portrait is rendered at 8K resolution, ensuring a detailed and clear depiction of the scene.