The video shows a close-up of a person's hand holding a paintbrush and applying red paint onto a yellow and blue surface. The brush is dipped into the red paint and then applied to the surface in a circular motion. The person's hand is steady, and the brush strokes are even. The yellow and blue surface appears to be a flat, smooth surface, possibly a wall or a canvas. The red paint contrasts with the yellow and blue, creating a vibrant and colorful pattern.