A whimsical, hand-drawn illustration of a small, wide-eyed frog sitting on a lily pad in a quiet pond, staring dramatically into the distance while contemplating the meaning of existence. The frog has a deeply puzzled, mildly horrified expression, with its little hands pressed against its cheeks. Surround it with tiny doodled question marks, spirals, stars, planets, infinity symbols, and other playful philosophical sketches. Add a large, bold, hand-lettered headline at the very top that reads exactly: “WHEN A FROG HAS AN EXISTENTIAL CRISIS”. At the bottom, add a clearly legible, humorous caption that reads exactly: “What if the pond is just a puddle?” Use charmingly imperfect black ink lines, loose sketchy details, soft watercolor washes, muted pond greens, warm yellow highlights, and textured cream paper. Storybook illustration meets quirky hand-drawn humor. Balanced poster composition with generous space for both text sections, expressive character, playful melancholy, and a slightly absurd philosophical mood. Ensure all text is spelled correctly, fully visible, and easy to read.