So I've been in a bit of a creative funk lately. When that happens, I find it helps to some times, just play in my junk journal. Junk Journals are good for this purpose, in the sense that, it's not an entirely blank page you are starting with, and I find this really helps.
In this case I grabbed some of the older Artist Inks- I recently found these when reorganizing my supplies. I wanted to use them up, and they were a great size to dip a paint brush into. Just by dipping my brush and adding it to the paper, my background came together quite easily.