Green fairy in the dark

This picture is based on a story I'm working on called The Wishing Well, in the land of the Western Boundary. The girl is the main character, she finds a strange looking object, and finds out that it is evil, from a stranger who comes into town. With her three other freinds and the stranger, they go on a quest to destroy it. <br />
The picture is when the group gets seperated and she is only with one freind, and a strange looking lizard thing is leading through a underground cavern, and they see a green light. <br />
I'm not going to explain the whole story but I'm just explaining it to you to get a fair image on what's it about.