I like the concept (I bet that little guy is going to pee himself. I know I might if I saw a giant menacing dragon when I turned the corner). However, in your experiment with drawing with a single light source, I don't think you made the area away from the torch dark enough. From the light colors, it looks like the scene takes place above ground in the late afternoon when the setting might be taking place in a cave. Still, the detail on the dragon is pretty good and I do like the picture though, you may have to practice more on lighting effects.