‘Three books on a chair’, does that sound like an arty title?! For this exercise, again drawing volume, I’ve used watercolour pencil to get the first lines down then finalise with pen. I find choosing colour and then painting in watercolour, a bit of an ongoing thing to learn. It’s a bit (a lot) splotchy.
Using watercolour pencil is quite a good way to ‘think out’ what you’re seeing.