I find the background rather messy with the flash reflection in the fireplace and that empty milk bottle on the hearth. Plus the yelow orange and blue background just does not do it.

I think it would work better with a studio setup and plain background.

Welcome to EPZ and your first upload. I too like the interiors of Cathedrals which to get right can be very complex and difficult (and I have many bad shots to prove this) . The first thing that strikes me is the perspective which really needs ajusting to bring the uprights vertical (Photoshop - Transform - Perspective). Its a standard problem when taking images of Architecture. I also notice that its a bit soft or/and out of focus and again this is not easy inside Cathedrals because of the low light and the length of the interior with the light falling off by the square root the further into the image you get. What happens is that because of the low light your exposure is at the extreme ends - slow shutterspeed (indicated by the blurred people) and large aperture which gives a narrow DOF and high risk of camera shake. Hope this helps Colin

Colours are georgous but I think I would have offset the shelves in the middle a little more to one side. You could try it with a crop.
Colin

I think this is an interesting and well spotted shot. The car and the fading fog give it a great depth. From my point of view I think it would have a little better compostion if you had cropped it at the right of the poles and taken out that white space, as it stands your eyes are not sure whether they want to look left or right of the poles and the line into the image is of course left. In addition I would give it a little contrast boost and even darken the first two poles so they stand out more. Noe the less well spotted. Colin