Sharpie markers are one of the most popular tools for doodling and writing on surfaces. They come in a variety of colors and can be used on a variety of surfaces, including paper, plastic, metal, and glass. To use a sharpie marker, first make sure that the surface is clean and dry. Then hold the marker at a 45-degree angle to the surface and press down firmly. The ink will start to flow immediately. To write with the marker, hold it at a 90-degree angle to the surface and draw or write with light pressure. ..