The colour yellow really contrasts well with the shadows of the library. However, I really couldn't tell that you were depicting a library until I read the title. The mandala form is done smooth and well, just like in your other works. But, because of the lack of spaces in the foreground, the entire piece feels a bit overwhelming. Maybe next time you cold try leaving more white space which would allow your work to contrast and complement one and another more, instead of squishing them together so that they take the spot light away from one and another. But the distance depiction and the bird's eye view was really well done, so the entire scene feels almost real. I would say the this piece didn't give me as much impact because it was slightly overwhelming, but it did make me see the beautiful possibilities of the future. Your work is futuristic in a nice, non-dystopian, way.