Ключевые слова: black, black background, blackboard, cartoon, chalk, chalkboard, change, character figure, cheerful, choice, circle, communication, concept, design, drawing, emoticon, emotion, expression, face, friendly, fun, graphic, hand drawn, handwritten, happiness, happy, icon, idea, improvement, joy, laughing, mood, motivation, optimism, people, person, positive, presentation, satisfaction, sign, sketch, smile, smiley, symbol, white,