Man, you've got some sweet photos here. Im just starting out but Ill tell you my $0.02 anyway.
I think the stars photos are awesome, did you colorise them in any way or is that the way they came out?
I really love the first three rows, and particularly the silhouette of the people standing the stars and the fire.
Some of the photos after this I didn't like as much like the BW street cause there isn't really as much going on.
I also really liked the skateboard with the shadow of the skateboarded its a really cool angle for a shot.
The main critique would be to experiment more with different distances from the subject like for example the skateboarding shots ( other than the shadow one that ones great) you could have some closer and farther shots.
Overall some sick pics though.