hello I need some sort of critique on this idk why but it’s lacking

[plain roost]

The positioning of the legs positioning is a bit weir, should be a bit behind the spines and the arm should be a bit longer

[hollow prism]

I think the concept is really good, but I would work better on the values so it could help you define better where the light is coming from so you work on shadows to give more depth. Hope it helps! 🙂