Not too bad, but there is much to improve. Water in pool looks like frozen, it badly needs some refraction. Concrete material is way too reflective and too glosy. There's white border around background - bad photoshop work? Background image itself is pretty bad quality and rather lowres. It looks more like poster glued to windows, than actual enviroment.
And there's something wrong with geometry of window openings. See attached image.
I think, you shoud've stay in wip section a little bit longer and finish this work properly.