After discussing cross-contour and continuous line, we moved on to the four techniques of gesture: line, mass, mass and line combined, and scribble. Remember that gesture is a quick and spontaneous all encompassing overview of your subject. Generalize, starting with the largest shapes moving towards the smaller shapes. Using multiple lines and treat the forms transparently. In other words, draw through forms that overlap one another. Remember that line techniques use the tip of the charcoal stick or pencil whereas mass techniques use the side of the charcoal stick.