I started this drawing as a rough sketch to make sure the measurements and placement of the objects were correct. The rough sketch is where you make your mistakes, it's where you have all your pencil and eraser marks. When you are done with the sketch you just need to transfer the drawing onto a finished piece of paper. Put transfer paper in-between your rough and your finished piece of paper. Lightly transfer your drawing down. Now all you have to do is build up your values and lines.