The first set of paintings were done on Tuesday by my Farnham class, we worked on tonal values using just two colours of Raw Umber and White. 
We made a strip of 7 graduated tones from light to dark trying to keep each step as even as possible. Squinting eyes to see the tone more easily and to check the strip for any big jumps, then adjusting when needed. 
Next stage was using the mixed 7 mixed tones for the still life, we also looked at composition eg placement on the board, scale, cropping, and paint application how much paint to use!
The second set is the class I taught today, in Haslemere same subject. I am so pleased with both classes results and how much they’ve improved 🙂