Just some feedback about the lighting:
The first pic's lighting looks a bit bland.. perhaps you could add in some more subtle light sources using different colour shades to create a bit of variety. Don't go too crazy though.
In the other pictures, it looks like you've chosen a colour from the palette and left the brightness at 255. As a result, the maps look washed out with colour - try lowering the overall brightness and then experiment with several light actors to create subtle nuances in colour, it'll look tons better.
The first pic's lighting looks a bit bland.. perhaps you could add in some more subtle light sources using different colour shades to create a bit of variety. Don't go too crazy though.
In the other pictures, it looks like you've chosen a colour from the palette and left the brightness at 255. As a result, the maps look washed out with colour - try lowering the overall brightness and then experiment with several light actors to create subtle nuances in colour, it'll look tons better.