Front and center of the card, illustrate a cartoon character with exaggerated, muscular features reminiscent of a playful gym trainer. This character, a cheerful anthropomorphic dog with a round, oversized head and large, floppy ears, is wearing a bright, lime-green tank top emblazoned with a comically large, bold "BIRTHDAY GAINZ" logo across the chest. His bulging arms hold an exaggeratedly oversized dumbbell, its weights shaped like colorful birthday cakes with dripping icing, complete with lit candles.

To the dog's right, depict a cheeky, squat panda in a vibrant orange sweatband, performing a bench press with a barbell. Instead of traditional weights, the barbell's ends are large, smiling cartoon balloons in bright colors—red, blue, and yellow—that seem to defy gravity. The panda's eyes are cartoonishly wide, adding to the humorous charm.

In the background, scatter several cartoonish exercise machines with birthday elements: a treadmill with a conveyor belt made of birthday streamers, a rowing machine with oversized, polka-dotted ribbons as oars, and a yoga mat that looks like a giant birthday card.

Add a vibrant confetti explosion in the background, with confetti pieces in the shapes of stars, hearts, and tiny birthday hats. The backdrop features a stylized gym setting with a pastel blue and lavender color scheme, where the walls are covered in colorful murals of cupcakes lifting weights and smiling kettlebells with party hats.

To complete the scene, position a cartoon-style banner overhead, stretching from one side of the card to the other, with the words "PUMPED FOR ANOTHER YEAR!" in bold, bubblegum-pink letters, surrounded by cartoon stars and musical notes, reminiscent of Charles Schulz’s playful lines and Osamu Tezuka’s character dynamism.

Generated with these themes: Gym workout, and Weight lifting.

Made with ❤️ by AI.