do you mean the wheel mechanisms inside the mill? In this case, not because they are not visible.
But overall, I like to deal with work that goes into detail if you mean it like that.
For your advice to winter scene, I think we didn’t understand this. This is a Clay Render meaning that it is a clean Clay model without texture that is used to extract the scene and lighting details that are not directly seen - in this case is used a white colour. Alternatively, for example, what is directly modeled and what texture was used.