a good idea. just a bit of advice, if you're looking to display your finished work that you don't really plan on working on further, the gallery is the place to do so. But if you're looking for feedback and critique, or help improving the piece, then it'd be best to start a work-in-progress thread in the forums. I say this because the score of these pieces in the queue indicates others think more work is necessary before passing this through to the gallery.

 thanks for the feedback. I didn't really realize how thick the yellow lines were 'till now. Perhaps I shall go back and edit everything

oranges are too saturated, kinda hurt to look at for too long. depending on the light source, one side of the building should be darker than the other. some window panes are jaggy. yellow lines in the street are way too thick, nearly the size of a car. some reflections in the windows would be nice. very few buldings have a flat, unadorned top surface, most have a little ledge, a means to access the roof, ventilation stuff, etc. rather strange that there are lines separating what I would assume is a single structure. first floor windows and less doors (maybe just a couple of double doors) would seem to make more sense.