Place the ball of clay on your wedging surface (canvas or plaster). If you have shaped it into a cone already, the small end of the cone points to the right and the thick end is at the left. Place your right hand on the right-hand side of the clay and your left flat on the left side. You left hand should be close to perpendicular to the table.
Push downward and away from you, working mainly with your right hand. The clay will move away from you slightly, leaving about one to two inches of clay jutting from the right side of the cone.
