Hey there, all the shading looks nice, but I think you’re neglecting the compositional aspects. The hero is lost in a sea of detail, and doesn’t have a clear silhouette. There’s not really a clear focal point in the image since it’s all so similar across it. My eyes are first drawn to the small lights at the end of the tunnel, followed by the fan. The character isn’t strong enough in the hierarchy of what you’re looking at.
You need to introduce some contrast, perhaps by blowing out the bright background lights so you can see the character’s silhouette in front, or vice versa, doing it with rim lighting on the character, cranking up the depth of field to separate him that way, whatever it ends up being. I think you just need to take a step back and design the lighting from the point of view of crafting the image, where the light and shade should be in order to communicate clearly, then start adding the details back in.
btw you can shift the view plane with the shift X and Y controls in the camera buttons.