This looks so much like our dry creek bed with our little apple tree in the middle. Maybe adding large rocks around the other side of the tree will make it feel more balanced. Also, I like the itty bitty rocks along the outside of the larger rocks.
The Welly Boot Box - ingenious combination boot jack & door-side storage for two pairs of garden Wellys (Wellingtons) - or any other boots, I should think. I could see doubling the length to accommodate a family - Also serves as a convenient seating bench