After the paint dried I have reapplied some brush marks.
The most striking difference is in the power of absorption of the paper. Dry watercolour paper seems to show new brush marks far less readily than paper that has already received some paint or water. Adding another layer makes the colour suddenly far more intense as well as the brush mark much less clear, or well defined.
This seems to lend itself well to gradual fading, better than on dry paper.
However the colours underneath do ‘pollute’ the new colour applied. In my case the pink and orange made a very pretty peach/apricot colour. The photo actually distorts the colours, they are far less vivid when not seen through the lens.
I found the phthalo blue was a lot easier to control , not sure if that is because I prefer the larger brush size or perhaps it is just different colours, different effects. I will need to check in the next exercises.