Render the ‘egg’
To begin rendering, I simplify the head into an oval or eggshaped form. I add gradients in two directions, bottom to top (vertical), and left to right (horizontal). This adds a nice wash of light half-tone and helps to set the stage for more detailed rendering.
The neck, as a cylinder, also has horizontal and vertical gradients Vertical gradient (bottom to top) Horizontal gradient (left to right)