You do have a good eye, excellent start. Lets critique each one though:
#1 - Nice colors in the photo. My biggest complaint is the cars in the background.
#2 - Great repetition in the photo. I'd say some of the photos look slightly washed out but that isn't necessarily a bad thing, especially considering it's not what you're going for. Try that as a black and white conversion.
#3 - Interesting shot, although the subject isn't very compelling. Good DoF work.
#4 - I can't tell what I think of it. On one hand the colors are nice and it works on a few levels. But shots of manhole covers (I've shot them before too) are sometimes a bit cliche.
#5 - Nice colors, especially in the reds. My problem with the photo is the area around the pedal seems very cluttered.
Keep shooting though, you have a great start.
