Hello friends of Steemit and the community of artists of "topaz", today I would like to show you a sketch that you make with the blue ballpoint technique where I put into practice the degradation of a single tone as it is the blue of the ballpoint pen, when we press the pen strongly towards the surface tends to give a very strong tone and that gives us a dark blue, while less pressure and with small uniform stripes we get lighter shades, this is the texturing to draw with this innovative drawing technique, I hope practice a little and you will see that it is very fun, here is a good example of degradation of a tone.