Modify the bowl and new swatches

I rubbed out the HB shading on the bowl so it is just 6B, 4B and white:

A bowl

This works okay. I’ve also added more swatches to my earlier swatches:

So I could try 6B, 3B, B and white if I wanted three tones plus white. I’ll carry on for now with just 6B and 2B.