Create an illustration capturing the vibrant essence of a spring birthday celebration in a beautiful garden. Feature a joyful scene with a trampoline set amidst blooming flowers and lush greenery. Infuse the illustration with a sense of birthday festivity, incorporating elements like balloons, confetti, and perhaps a birthday cake nearby. Emphasize the cheerful atmosphere of the occasion with warm and inviting colors that evoke the spirit of spring. Ensure the details reflect the lively energy of a birthday celebration, making the viewer feel the joy of bouncing on the trampoline amidst the beauty of a blossoming garden. --v 6.0