Ok just my thoughts ar, you know I'm also new.
#1 & #2 is rather odd, the perspective from the ground doesn't seem warranted, there is nothing quite of interest on the ground. For #1, the point of focus being the road is also a tad uninteresting. For #2, though staring at the doorway seems creepy, the presence of an obviously populated HDB flat also negates that effect. I however am not experienced enough to give a suggestion on how to improve on the creepiness factor. I guess a wide angle used at the doorway might help.
#3, my eyes get drawn in from the bottom, and led straight out the top left. Or vice versa. I think for this instance, it would have been better if you could get a perspective from track level. And perhaps B/W :think:, I don't know, I see most of my world through my camera in B/W.