Whilst the concept of an arial photo of the city at night is good, and you have found a potentially good vantage point, I don't feel you have really pulled it off. The focus on the city itself seems too soft, and the inclusion of the railings is distracting.
Nice subject, lights. Overall image seems just too low key, with distracting bits in foreground. Would be better cropped for the upper part, at least 3:2. I can guess that the brightly lit event on the left made it difficult, consider cropping it out and re-editing for downtown.
lotta black - shoot this 45 minutes after sundown (when the lights are on in the city, and balanced with the light levels in the sky) and that's a postcard I'll buy. BTW, Pitt is one of my favorite cities, so it's fun to see it even in the dark
Not sure if you used a tripod here or not, but you REALLY need to use a tripod and a *much* longer exposure to capture this. It's far too dark, I'm afraid. On a night when the lights are on at PNC Park, I'd close in on the city itself so you don't have to worry about those lights blowing everything out. Leave the exposure open for several seconds... like 2" at f5, or something, and you'll get a much more pleasing result, and there will be detail in the shadow areas. Here, we can't distinguish between the rivers and the trees on the shoreline.