I think the Princes Dock bridge shot needs more space on the right, and also if you take a tripod next time shoot around 30 mins after sunset and it'll be so much nicer. Its just too bright tbh. It just seems too bright for dusk. Its nicer with deeper blues and the city lights showing up more clearly. The same for the Liver Building shots. I was just round the corner at Albert Dock shooting the same sunset. It was so nice.
I like the ferry shot, what settings did you use?