**Front Cover Design for a Jiu-Jitsu Birthday Card:**

1. **Main Scene**: A flat, vector-style illustration depicting a playful and whimsical jiu-jitsu scene.

2. **Background**:

- A smooth, solid pastel blue backdrop, providing a clean and uncluttered surface.

- Add a few stylized geometric shapes in lighter shades of blue and white to mimic abstract gym mats or dojo flooring.

3. **Central Characters**:

- Two cartoonish characters in a jiu-jitsu match. They should be in mid-action, capturing the dynamic essence of a rolling or grappling movement.

- Character 1: Wearing a crisp white gi with a black belt, featuring exaggerated rounded shapes for hands and feet. The gi should have flat, black lines to show minimal details like stitching or folds.

- Character 2: In a vibrant red gi with a blue belt. Use simple, contrasting colors for the belt and gi, employing flat vectors with subtle highlights to give a sense of texture.

- Both characters should have simplified, expressive faces, with big round eyes and wide smiles, giving a sense of friendly competition.

4. **Objects**:

- A large, flat birthday cake off to the side, illustrated with flat shapes and simple colors. The cake should have a base layer of cream with vibrant blue and red layers, matching the characters’ gis.

- Simple geometric candles on top of the cake with stylized flames, perhaps in bright yellows and oranges.

5. **Additional Elements**:

- Floating, flat, vector balloons around the characters in a palette of primary colors (red, blue, yellow), with thin, winding black lines for strings.

- Flat party streamers in similar colors, arching across the top corners of the card.

6. **Typography**:

- A bold, clean, sans-serif font at the top, reading “Happy Birthday!” in a rich navy blue to stand out against the pastel background.

- Additional text at the bottom, “Let’s Roll Into Another Year!” in a playful, curved line, mimicking the rolling action in jiu-jitsu.

This design should combine humor with the flat vector style, utilizing crisp lines and vibrant colors, inspired by the illustrative works of artists like Malika Favre and Patrick Seymour.

Generated with these themes: Jui jitsu.

Made with ❤️ by AI.