I'm a newbie... so I can't give you any professional c&c..... but I really like your photos... I really love the Marina Bay area in the night.... such a beautiful place it is....
#2: The Esplande & the Singapore Flyer looks great in this photo
#3: The Fulerton Hotel..
did you take this photo from the bridge near the Merlion?
#4: Again... the Floating Stadium and the Singapore Flyer.... awesome.....
Love to see some more photos of Singapore
Some exif would be great