This is vivid and colourful but at the same time it looks highly professional unlike some very colourful pieces which can look childish. The reflection is done absolutely beautifully and really works on this image to enhance the feel of the scene and the depth. It's like a fantastical circuit world and the fog colouration is superb and just right to enhance the mood, colour and overall sci-fi feel of the piece. The composition is very interesting to look at. The individual notches and grids remind me of inside a motherboard or something electrical. I like it this way up because it seems as though perhaps gravity is minimal or not here because it does look like an entrance at the other side. If you rotated it left this would be more apparent but would probably spoil the effect. I also like the multilevel effect. All in all I think this piece is amazing!!!!
This doesn't seem nearly as interesting as your other pieces. Your other ones [well, the good pieces] revolve around some sort of pattern or subject, and have well-chosen colors.
You see that bottom right corner, that mysterious blue 'hallway' into nothingness? That's what I want. Mystery, depth, interest. Try cropping to that little corner right there, and compare it to the overall image. Obviously, now that you've cropped it, it will need more work, more details for it to become apparent that it is superior to the original image.
I know you want to draw us into the environment, make us feel as if we are there in a unique place. This was done, but it doesn't bring much impact.
For impact, you need better and more interesting lighting. A subject/point of interest. The colors aren't working for me -- they lack excitement, the electric energy of this microscopic universe. The only colors I like... are that blue thing down there. And that's because of the emotion it evokes.
/Dude from #QualityColor who rarely rejects your submissions.