This is neat!
Great work on the lineart, you did a great job making the lines smooth all throughout, same goes for the shading.
Only thing that I can notice that might be able to be improved upon is the left side of the holo-wall. Notice how the green glow bends to match the perspective set by the floor tiles, the blue part of the holo-wall only bends slightly.
Perhaps making the wall bend just a little bit more would fix that.
Other than that I can can't see anything wrong with the drawing.
Excellent work! :P