So your dungeon scene looks good and polished but is kinda basic and uninteresting. If you consider this to be your best piece i suggest revisiting it and add more visual interest and something that tells a story.
The props look ok but maybe too random and unrealistic. The dresser doesn't match the material definition from the reference.
Abandoned lab scene is too inconsistent, like a kitbash of marketplace assets. The grime and dirt on the walls, floor and desks doesnt match the clean monitors. The material definition is off: i don't know what is metal, plastic or fabric.
The gallery is interesting but outdated and lacks polish.
Overall, you seem to have the skills but need improvement in all areas: UVs are wasting some considerable space, textures are muddy and overly worn, lighting is bland and doesn't make sense in some cases (why would an abandoned place still have lights on).
I would suggest that you study your references better and keep practicing.
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