Ok, perhaps you can have more fun trying to aim your shots at telling a story.
What do I mean...
#1, 8, 10, 12, 19: To me, does not convey any message / story.
There are some creative and thoughtful shots though.
Leave stuffs not in the story out. Like:
#13: Road sign. "Balestier Road". I don't think the sign and the walls belonged to the same era.
A few things perhaps you can explore on perspective;
#4: If you trying to have fun with the statue with leaf covering her chest? If yes, the contrast is not enough to make it a focus. Perhaps in this case, a coloured photo can do better?
#5: If you are trying to have the blured effect, I think its too blurred for my liking.
#7: What is the story here? A snap shot? Try to make a relation between the 2 subject. Like Big vs Small, etc...
#9: Does the sign "SOLO" means something in the pic? Either you make use of it, or you take it out of the pic.
#16: Think can be nice if you are close to the white wall. Capture the grains on the wall. There's no need too much space on the left in this instant as the black void is very big.
#17: Try pointing up more. If you wanna make the faraway (I presume is some stand with a wind-chime) feels isolated in contrast to the foreground (unidentified) items, you need more headspace to let it feels isolated.
#19/20: In a series when 20 is so much nicer then 19, I think you can take that off.
Try not to post too many photos at one go. Quite difficult to comment.
Again, all points above is my personal views only.