The process I used was to paint an underpainting in pastel and then using a spray bottle mist the painting until it drips. The drips make long marks on the painting that I can then respond to and incorporate into my painting. Here is the results.
|Shack by the Bay|
8 X 10 pastel on Wallis
I must say I like the results and will try this again. You can see the drips on the right side. The effect is a textured area with dimension.