Van Gogh’s wonderfully simple pen and ink drawing shows how drawing does not need to be complicated.  Just give it a try!  Here note how Van Gogh used simple lines to create an great drawing of a meadow or field.  Thin and thin lines going different directions make the field look like a meadow of plants.  See how he uses a simple value (dark/light) change to delineate between the foreground and the background.  The narrowing of the field as it goes back creates depth in the drawing another simple technique.  Try drawing with a simple pen, it can do more than just be used to sign your name. Have fun!