Vector illustration in a bright, joyful style. On the left — a happy girl in autumn clothes (warm sweater, jacket, scarf). She smiles widely and throws autumn leaves (orange, yellow, red) up into the air. Leaves are flying. On the right — a joyful boy in winter clothes (warm coat, hat, scarf, mittens). He smiles and catches snowflakes falling from above. The children are standing at a distance from each other, with empty space between them for text. The composition shows the transition from autumn to winter: warm colors on the left, cool colors on the right. Between them, leaves smoothly turn into snowflakes. Flat vector graphics style, clean lines, bright colors, maximum emotions and joy. Leave free space in the center for text.

The image shows a boy and a girl throwing leaves in the air against a white background. The leaves are in various shades of red, orange, and yellow, and the snowflakes are scattered around them. The image is animated, giving it a lively and cheerful atmosphere.