The same model rendered in flat and smooth shading.
I noticed that some details in the model geometry are lost when its smooth shading. I tried using mean crease edges but I feel like I missed a step somewhere. In the second render I tried adjusting the normal autosmooth angle.
A smooth shading render without messing with the normal setting.
(edit)
I tried adjusting the geometry a bit. Dissolving some edges or moving/scaling them around to highlight the detail.