Create a heartwarming birthday-themed illustration where a charming robot sits alone in front of a small birthday cake placed on a table covered with a checkered cloth. The robot's eyes should sparkle, and it proudly adorns a tiny party hat perched amusingly on its head. The cake is decorated with a solo lit candle that radiates a gentle glow, reflecting off the robot's metallic structure. The backdrop features a close-up view of pastel-colored balloons and a banner cheerfully displaying 'Happy Birthday' in a casual typeface, with delicate confetti softly falling around the robot.

Generated with these themes: Robots.

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