At the top of the Illustration Style image, "Happy 100th birthday Olive!" in warm, hand-lettered script gently entwined with a subtle olive-leaf garland.

Hand-drawn illustration with fine linework and textured brush strokes: a tender, sincere scene of a gentle tortoise centered on a sunlit garden path, wearing a delicate crown of olive leaves. The tortoise’s shell is richly patterned with careful crosshatching; it carries a tiny cupcake with softly glowing candles shaped 1-0-0. Framing elements: soft wildflowers and grasses, dappled golden-hour light, and a softly washed, slightly out-of-focus background to keep attention on the tortoise. Balanced composition with generous breathing space above; visible paper grain; warm, expressive color palette of sage and olive greens, honeyed ochres, terracotta blush, creamy ivory, and warm brown ink lines. Keep the mood heartfelt and natural—no loud party decor.

At the bottom, small and understated on a ribbon near the ground: "Shell-ebrating a century of you."

Generated with these themes: Tortoise, and .

Made with ❤️ by AI.