I'm a newbie, but the massive attack poster is very distracting... As its not the focal point of the piece you might consider making it ligher in color... and make it less detailed... it would be a stronger overall piece then.
The keyboard look a bit wield. Not sure if it is actually the shape of your keyboard or the angle. The white background and the window fade to white at the top look unfinish. Other than this, it looks great! I especially like the blinds and the outside view!
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