WIP - Terrace by the water

Hello,

This is my first post here and someone once said: “If you want to get better ask a professional” so here it is, I created a scene and I got lost on what is better textures for it. How can I continue? I did a few renders it did not take more than 20 minutes with 100-200 samples.

Base Mesh

The I started with the materials:

So any comment and the best way to go please let me know I’ll really appreciated

Thanks