Great Art Piece.
The imagery here is perfect. The shading everywhere is perfect, and the look of the light radiating from the laptop screens in shown perfectly. Most art has a white screen but cannot portray the 'light' being emitted by the screen, you mastered this. The image comes out as realistic in a cartoon sense, and is convincing for what it is.
Your style reminds me of the style used in the Foamy series - I'm sure you have seen these animations before, and I'm not certain if this is the style you go for, or if this has always been your style, either way its done well. The only real flaw with this, is that it isn't exactly breathtaking.
I mean, there are no flaws I can see in the sense of shading, lines, the basics, etc. But this isn't one of those pictures that really captivates someone, and I feel your style will never achieve a drawing that really is, only simple 'Hey, this looks pretty neat, whats next', type pictures.
I'm not trying to be picky or anything, I just feel if theres nothing direct to criticize, find something to try and potentially help the artist behind the work, unless they're Da Vinci. I do believe you have the fundamental skills of shading, lines, etc, to expand your work into breathtaking imagery.
It will just be unfamiliar ground for you.