New update on my Vufflens Castle drawing. I decided to go with dark heavy clouds on top tapering back to open sky and then picking up again with some distant clouds with dark and light tones. This helps to bring the castle to the front plane of the drawing. To produce the dark clouds I used a 6B graphite and then went over it with a 4B graphite. I then blended the graphite with a stump to even out the tone. I used a kneadable eraser to pull up some of the graphite to produce the lighter areas in the dark clouds.

You can follow the WIP and read a detailed explanation of how the clouds will be drawn and why I made certain choices in how they will be rendered.