Much free UV space. For shapes like this that follow an axis (long), you could consider a 1:2 texture ratio. If you stick to a 1:1 ratio, I would still try to maximize the UV space. Another way to maximize UV space would be to mirror parts of the model.
Appearance is rather lowpoly, some bevels would make the shape look more detailed.
Shading-wise there seem to be some strong gradients. Consider hard edges and UV splits at steep angles.
Regarding the translation of the design, I think the thin parry combined with the massive cross-section looks a bit unbalanced, I would take a second look at the concept and try to note what's essential to it. Looking at additional references for construction and doing overpaints can help to direct oneself during the process.
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Hi! Looks cool overall! Some critiques: