"Create a **pixel art sprite sheet** for a 2D game: - Each frame sized **32x32 pixels** - Transparent background - **12 characters**: each representing one Vietnamese zodiac animal - Each character has **16 walking animation frames(up,down,left,right)** - Arrange in **12 rows**, one row per animal - Style: cute chibi, 16-bit retro - Clearly separated frames in a grid "