You should b&w the first one and play a little with fill light. Composition is great, just a little too much room on the left. Love it though.
I like the second one, though I don't really know why.
The third one is really great. Great subject choice, great composition. color do need a bit more oomph.
I don't get the 4th one at all. Focus on the watch, even though you're reaching out with your hand. The framing is also not that good on that one.
As for the last one, there is too much free space which, most of the time, is not really good when taking pictures of the city at night.
All in all, I'd really like your first three pics, but don't be afraid to play with the colors when editing the pictures. Keep it up.