Hey mate, looking good as always. A few thoughts:
The tree and grass, would they still be there if everything else around was destroyed? I think you need a little more defiintion to the forground, where the grass is, i’d be temped to replace the grass, with bent steel, ash, stones, bricks etc … oh and not to forget the classic half burnt human arms sticking out with complimentary skull and bones

It needs a few persective elements to lead the eye down the scene. Something simple like a path, road, steel fence of something.
The sky feels a little seperate to the ground, maybe if you painted over the sky in the same style as the lower half it might marry together more.
Overall great, nice colours.
I’d love to see you start using more 3d if only to setup the basic shapes for compositions, it helps me a lot with perspective.
Though i’ve just noticed in the last post there’s no smoke, which probably means the tree and grass have grown since the event itself, that probably makes sense. Nature repairing tiself so to speak.
Thumbs up 