Trace any image using the camera output from your phone's screen; the image won't display on the paper, but you can draw it exactly as you drew it. The user can modify, save, and reset the drawing as well as change the layout or transparency of the image. Simply upload a picture or line drawing that you want to trace (or look for one online to practise with), resize the image so that it is clear, and hold your phone in a tripod, cup, or stack of books so that it is elevated above the page.