Let's put a landslide in

I decided putting in a rectangular in this painting, which is split into two pieces and the top one is sliding down a little bit. Both top and bottom pieces would have full colors in them and the outside part would be monotone. So, to show the sliding line, I would have to paint an actual line, maybe a dashed line. Since this is the 11th piece for this year I'm going to try finishing it by the end of the month/year. Last year or before, I finished only 10 pieces or less. This would be for my personal record if I could finish by then.
But at the same time, I want to start a new landscape painting as well, which I haven't decided what to paint yet.