Marc, very nice work! I love to make little 1/72 dios--they fit nicely in a bookcase display case, and are getting easier to find interesting accessories for all the time--when I started modeling all you had were those weird ESCI log-forts, if you remember...?
Anyway, I disgress....if I can add a suggestion? An important element that you've missed has to do with "vertical interest"--that is, add a tree or something to give some vertical element to the dio to balance the breadth of it. It could even be a telephone poll--but a tree or high bush is easier, of course.After all--think of it--you've got this long branch that the guys are using for a seat--where did it come from? And wouldn't there be more around? More trees, or saplings from that tree that has become a bench?
You'll notice right off how it seems to balance the scene even better that you thought.
Good start! I wouldn't mind seeing a little more green on the base too, like some more grass powder for contrast on the brown ground?