To revise my kit, I edited the table and the shelf to have sharper edges and made a folded over paper. I also added an intense height and normal map to the columns to simulate more geometry. I also messed with lighting a little to see what the scene would look like at night, and darker, with an ethereal turquoise color and then an orange hue.
That blue lighting is definitely ethereal. I like what you did with the shelves, you definitely took our advice to heart. Make sure everything doesn’t get drowned out in one color with the lighting. Try using more than one color.