The carriage looks out of place in the image. It looks like some of the parts are either blurred, or low opacity. Overall I just don't think the images flow together. You might consider using a different stock picture and spending some more time on the carriage. Also, you should work on the colors some more; you probably want to use a color closer to black and white to give it that stone look. In fact, you might be able to keep the background, work on the carriage some more and just make the whole thing black and white.
it looks good only the back of the carriage should be changed in some way to make it look more realistic
i like it..i don't think the carriage is out of place i just don't the the COLOR of the carriage matches the rest of the image
i would try burning the back of the carriage a bit. I think that would help more than anything. Other than that though, I love it.