Yes, photos are unedited and I agree - they are a bit darker than they should have been. As I'm not a pro, I couldn't tell on the spot and kept the same exposure. :)
Thanks for the composition compliment, I tried telling a story with each photograph, though it's sometimes hard with street photography to have all the good stuff in the frame, cause everything is moving and you have to act fast.
I'll be having tons of fun practicing and learning ins and outs of photography. :)