The first image is one of the atmospheric backgrounds I worked on last week. I liked is so much just the way it is that I decided not to build a composition over it. Rather, to save it for reference. I might do a few more similar pieces to build my comfort level with this set of techniques.
These two are monoprints, pulled from the initial layers of backgrounds I did last week. One of the techniques we learned is to brush paint onto a substrate, then lift some of it off with drawing paper. The image just above is one sheet of paper that I used multiple times to lift paint off substrates.
So, now I have more backgrounds for collage or other work.