I liked the last column the best. The others have possibilities except column number 2 from the left which just didn't work well.
I decided to try using a Richeson pastel board for the first painting. I felt I had to get a fairly thick layer of pastel on the surface before it cooperated. Not sure I'd use that product again. Process shots below:
I got more fiddly than I wanted - I wanted it to be a bit more graphic and loose. Maybe next time!