OK.
1. I don't think you need the runoff from the mountain, it's less realistic than the rest, obviously a warped SSS, even if it's a PS mask. Water across the beach can come from melt.
2. I would add a dirt/rot PF (world scale) across the boats, so they differ in texture/darkness. If they've been there a while parts may be quite blackish.
3. I would soften the smoke quite a bit, especially higher up!