They look great.
Re: bases, have you ever played around with a cobble stamp made from an old paintbrush ferule? Basically you yank the bristles out of an old brush you no longer use or want, then use needle-nosed pliers to bend the ferule end into the shape of a cobble. Then you can put putty on your bases and stamp cobblestone patterns into them. I use it for a lot of my Victorian stylie figures. The integral base the model is standing on can't be stamped of course, so I usually just have that as a patch of dirt or something.