Have you modelled them? or you used a generic models? if you created them, can you upload a wireframe screenshot plz?
I like the lighting and texturing.
Jeez! These are amazing. Almost thought they were photos if it hadn't been for the mention of 3D graphics/programs used. You have quite the talent! I do art for hobby as well, do you get the "But you're just wasting that talent!" or "You should do it professionally!" comments as well? [I get them from my mother all the time]