How did you convert to black and white?
They are a bit flat on my calibrated monitor.
Also, the grayscale is going to be a problem , learning how to "see" in black and white is very important.
Also, it seems on at least the first one you used a shutter speed of 1/800 and I would expect the image to be sharper, perhaps a bit of camera shake came into play. For some reason, I can't review the metadata in the others , but they appear to be a bit sharper.
It looks like an interesting venue for a photo experience.