The front cover of the greeting card should be an explosion of vibrant colors and playful elements, capturing the essence of a cartoon wonderland inspired by beloved classic styles. At the center of the scene, an exuberant otter with oversized, expressive eyes, reminiscent of Charles Schulz's Peanuts characters, stands upright, holding a speech bubble in its paw that reads "Happy Birthday Alex!" in bold, cheerful font.

The otter's fur is a warm, chocolate brown, accented with patches of cream on its belly and snout. Its whiskers are whimsically exaggerated, curling outwards in animated loops. The otter is wearing a tiny, brightly colored party hat perched between its ears, striped with alternating bands of red and blue, reminiscent of a festive, Disney-esque flair.

Behind the otter, a large, multi-tiered birthday cake takes center stage, its layers frosted in pastel hues of pink, blue, and yellow. Each layer is adorned with whimsical patterns: polka dots, stripes, and swirls, channeling a playful Will Eisner touch. The cake is topped with a collection of oversized, cartoonish candles that flicker with flame-like halos, casting a gentle glow.

Scattered throughout the background are buoyant hearts of various sizes, rendered in a palette of soft reds and pinks, floating upwards like bubbles from a Walt Disney fairytale. These hearts are interspersed with small, shimmering stars and confetti in vibrant hues of gold and silver, adding an extra layer of festivity.

The backdrop itself is a serene sky-blue gradient, fading from a lighter shade at the top to a slightly darker hue at the bottom, suggesting an expansive, open space akin to Winsor McCay's dreamscapes. The edges of the scene are lined with playful, cartoonish clouds with rounded edges, providing a gentle frame that brings focus back to the central birthday celebration.

Overall, the composition is rich with detail and color, designed to delight and captivate the viewer, a perfect blend of classic comic influences and modern whimsy.

Generated with these themes: Otter saying Happy Birthday Alex, Cake, and Hearts.

Made with ❤️ by AI.