Well, so far so good with switching up my method for applying paint. It's kind of refreshing to have to think about things a little differently. I like the improvisational aspect of it. I still have a slight worry about getting enough layers built up.
Plus, two different friends suggested I add an indication of the earth at the bottom of the image, to add more depth. I sketched it in to see, and once I did that, I couldn't unsee it. So I added it with a thin layer of washes. I think I'll keep it.