Back in the saddle, or palette

Well, that was an unexpected pause - blame it on Covid-19. 
Onward and upward - I have 4 oil paintings in progress. One of them has been 'in progress' for several years so it is fortunate a very patient person commissioned it. After several drafts to combine several photos into one picture, I think I might have a better layout now. We'll see.
The paintings that have one good reference photo work way better for me, but I need the brain challenge of making my own images. This one reuses a horizontal oil painting (sunset on water) as a background for a vertical landscape of a foreground tree in autumn. Nothing of the underpainting left though. Maybe I don't entirely get the concept of background...