The term 'manicure picture 2020 design purple butterfly' refers to a design concept for nail art featuring a purple butterfly theme. This design style, popular in 2020, often involves intricate patterns and vibrant colors, especially purple, to create an eye-catching look. Nail artists use various techniques to achieve such designs, including freehand painting, stencils, and nail art pens. The popularity of such designs reflects the ongoing trend towards unique and expressive nail art in modern fashion.