Sketchbook: St. Michael, an update

I recently posted the sketch of St. Michael I was working on for a friend.  In recent weeks I did add the devil into the mix and thought I'd post the updated image.  Just for reference, when I think of devils, I usually see them as faun-like creatures.  You know, the half man, half goat mythical beings.  And when I think of goats, I tend to think of the long horned rams with the big spiraled horns.  Thus, I drew a faun looking devil with slightly curved horns instead of a weird looking red dude with a creepy mustache. 

I have also sketched in a background concept.  It's fairly crude, so pardon the scribbles.