Great piece! There's hardly any comment needed, I think, or I'd be nitpicking. If you want me nitpick; move the camera a tiny bit to the left so the partly hidden trunk behind the first one is just revealed, make some fake grass in distance (left), it's kinda flattish there.
Perhaps make the underwater rocks less, or more like rocks. But I can also see them as half-buried rocks with silt on top.
Perhaps also some more camping items, such as some cutlery, pots and pan, some stuff campers leave lying around outside their tent.
And finally, maybe some dirt on the canoe, or some old scratches and patches, you know, so it doesn't look brandnew. And some wrinkles (bump) on the tent. I use a wrinkled cloth tile for my clothes sometimes, just to give it some more reality.
But if you leave it as is, it's very good already.