Using this you may learn drawing. Just select an image from the app or gallery apply filter to create image traceable. Sketch: A sketch is a rough or unfinished drawing that is used to capture the basic form and proportions of a subject. Sketches are often used as preparation for more finished works of art, such as paintings or sculptures. They can also be used to simply capture an idea or impression. Trace: Tracing is the process of copying an image by following the lines of the original imag