Updated on 26 February 2017 (Harvard referencing).
2 May 2016. With my newly discovered skill of keeping a sketchbook diary properly, I embarked on the next step of this exercise, making sketches of the objects to get acquainted with their properties and having a look at negative space created by placing them. This was most enjoyable and I think relatively successful (in contrast to the mini disaster to follow …).
My preliminary sketches I did in watercolour with ink pen, on the lookout for chance findings to make use of in my finished painting. I found the somewhat abstracted coloured shadows pleasing to look at, while also object likeness was not bad. The most difficult part was the shiny blackness of the pumice, which I was unable to copy, but since the overall structure of the rock was good and I wanted to keep this as a reference for later, I left the sketch as it was (Fig.1 ).

Next I experimented some more with placing the objects on my prepared background and already had a feeling that both ideas would probably not go together: I arranged the objects on the support where I thought they would both connect in their geological context and form an interesting pattern regarding the negative shapes between them. Doing this I could see that the shadows, if they were to be coloured, would clash with the negative space, making its properties less visible.
Since however this is supposed to be an experiment and my tutor advised me not to get distracted by seemingly finished paintings in the mind, I went ahead with my arrangement anyway. I made a rough charcoal sketch to identify the important negative spaces (Fig. 2).

Looking at the above sketch I thought the setup looked fidgety, since although everything pointed towards the centre, there was nothing to see there. In order to decrease this effect, I used a bit of beautiful white mesh normally used for decoration purposes and glued it into the sketchbook like an additional page.

Now the arrangement was more pleasing to look at and I still did not look forward to translating it to acrylics, it was full of foreboding of the weekend to come :o) …