first one has nothing special about it, possible thought for interesting lighting effects at night though. It isn't framed properly. The subject of interest is quite vague and is difficult to understand what you are trying to highlight.
Second one is not bad, Little over exposed. You tried to stray to far way from he rawness that is the statue IMO. It needs to have a feeling of darkness reaching into light but this is only "grey reaching into light"
I hate shooting people unless its with a gun.... But yea quite a boring shot, you should have gone for a particular feature such as his eyes. It took me a second to notice but the shot is also a little out of focus.
Framed incorrectly, little over exposed
Quite grainy, could look quite good as B&W shot. Little underexposed. I would have taken the shot from lower down and closer to the rider looking at an upward angle. (just my 2 cents on that shot)
Little over exposed for the feeling of the shot. Interesting concept but i alway hate straight on shots.
I hope i didn't come off as an ass but i did like some of the stuff that i saw in your work. Keep at it and post up your new stuff as you progress as a photographer.