Well seen.
Now, I do not see the need to keep the wall, presumably in shadows, so well lit. Nor the grass. Nor color.
When you see something nice, as you did, accentuate it. In this case, treat the right hand diagonal area the same as the left one, i.e., rather dark. And in black & white. And cut the lower portion, so that the final ratio is more like 16:9.
And... ok, enough! Although, it is a critique forum, after all