IMO, you should zoom in tighter on the National Museum. The lights in the front are distracting. Next I felt that a B&W version of the Museum would be more outstanding.
- Here's my shot for the Museum, if you want to see a B&W version.
http://www.clubsnap.com/forums/showthread.php?t=414872
For the second picture, I'm not too sure what is the subject of the photo, since the horizon is in the middle. The lights? The reflection in the water? And you should remove your lens filter, there's flair on the left.
- If you want the reflections in the water to be the subject, you would need a longer exposure so that the water would be smoother and the reflections more distinct.
For the third picture, you should zoom in tighter, and leave the left side of the picture (the sign board) out of the picture. I think it'll look nicer than.
Just some comments.