1st pic dosent look sharp enuff.. maybe its becos the lights frm the buildings are not bright enuff. try exposing them longer.
and i dun really like the buildings being 'chopped' into half.
too much of the river. maybe 1/3 frame river, 2/3 buildings and sky.
2nd pic is ok. but can be better if frame it with more of the road. 1/3 sky, 2/3 roads maybe.
or can try portrait orientation.