Nice scene! I don't know what this is from, so some of the following might not apply. I'd assume it's a personal memory?
The scale seems off in places. The hats look quite small compared to the backpacks and cardboard if it's supposed to be realistic. the ground texture might be a bit too big. The one larger rock in the lower left corner of the second to last image looks like it would be bigger.
The one thing that stands out immediately to me is the lighting and grading. Seems much too harsh with too much contrast and dark shadows and unnatural in a way that's the opposite direction of what you'd normally do for a scene like that, even if the sun was burning down. Adding different grading options also implies that you aren't quite sure where you want to go with this. The second one might be some sort of faded photograph (but not quite). Currently, it's the most unfriendly one of the bunch, but turning it into a photo could give it a reason to even be there. Overall, I'd probably aim for more pastel tones, but that might not align with your memory.
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The scale seems off in places. The hats look quite small compared to the backpacks and cardboard if it's supposed to be realistic. the ground texture might be a bit too big. The one larger rock in the lower left corner of the second to last image looks like it would be bigger.
The one thing that stands out immediately to me is the lighting and grading. Seems much too harsh with too much contrast and dark shadows and unnatural in a way that's the opposite direction of what you'd normally do for a scene like that, even if the sun was burning down. Adding different grading options also implies that you aren't quite sure where you want to go with this. The second one might be some sort of faded photograph (but not quite). Currently, it's the most unfriendly one of the bunch, but turning it into a photo could give it a reason to even be there. Overall, I'd probably aim for more pastel tones, but that might not align with your memory.