Some of the pine tree trunks look super tall and bare close to the bottom, perhaps add more leafy areas closer to the bottom or move the trees downward so less trunk is exposed. On the hilly-ish area leading to the cafe, an obvious path would be nice rather than just a hill, it sort of leads the way to the cafe. The colors you chose for the chairs are very nice, they pop out, but one of the chairs is a dull browish color, so you could maybe change that one to yellow, since there’s no other chair like it.
If you’re looking for things to take up space, try some indoor plants.