this is awesome, dont entirely know why this image is sooooooooooooooo common(ive drawn similar stuff several times) but i always enjoy it, the advice id give you is to try working with dynamic lighting more, like having everything fade into a void as it moved away from the center, and giving a glow to the computer monitors would look wonderful(look into the hildebrandt brothers if you need a reference for what i mean)

that or i would try making the colors more vivid and psychedelic i think the term they use is "superflat"

either or, still the dimensions and perspective are great