Create a clean, hand-drawn sketchnote illustration with a warm, positive and educational feel. Show a large open door in the center of the image. Behind the open door, depict one female figure and one male figure celebrating together with a high five. Their body language should convey joy, cooperation, achievement and mutual support. From the room behind the open door, let numerous individual letters fly outward into the surrounding space. The letters should be scattered randomly and playfully, with no alphabetical order and no recognizable words or sentences. Use a variety of uppercase and lowercase letters and different sizes to create a dynamic sense of movement. The illustration should clearly communicate the idea that the two people have just learned to read and write together. The open door should symbolize a new opportunity or a newly opened world through literacy, while the flying letters symbolize reading and writing skills. Style: simple hand-drawn sketchnote, black ink with subtle accent colors, expressive but minimal figures, clean white background, friendly educational atmosphere, slightly imperfect handwritten lines, visual storytelling, clear composition, no unnecessary details, no text labels, no speech bubbles, no realistic rendering.

The image shows a man and woman standing in front of an open door with letters coming out of it. The man is wearing a blue shirt and black pants, while the woman is wearing an orange and blue dress. Both of them have their arms around each other, and the background is white.