Now rub out your construction lines, and start to add in the permanent detail lines. Decide where you want your light source, so you can place shadows on the right sides. I chose my light to be coming from the top right hand corner of the page. There fore, you can see here in this close up, that the left sided lines have been darkened. Also, start to add in faint lines for little details for the textures of the skin. Hint at wrinkles and lumps to give the drawing more depth. You can keep the eyes white, or make them completely black, or add in pupils, its up to you.