How I draw a value scale for portrait series: B GRAPHITE PENCIL: 1.) I draw out 8 squares for my value. I start at the dark end of the value scale with my B pencil, and start shading. I shade towards the light end. (Shading up and down to make even tones and layering.). GRADIENTS VALUE: 1.) I shade up and down with my pencil for a gradient effect. 2.) For my HB pencil I start by drawing 8 squares again-an inch apart.