This is an interesting image. Although I like the scene layout, there are a couple of issues regarding the scene lighting.
The shadows are correctly cast, and the lighting affects the impressive materials which have been added to the helmet correctly.
My issue here is the right-hand side of the helmet, which seems to have noisier/grainier light bounces. This could have been smoothened out it a post-editing application or configured inside the rendering program. This should have been a prioritised fix because lighting seems fundamental within this render; meaning that any faults would cause a mass reduction in the overall image quality.
Another matter of concern is. . .
Read our second issue coming out July 1st to see the rest of this art review!