Hocus Pocus at Doug Jones Experence
This is the Hocus Pocus page at a site about Doug Jones, the actor who played Billy Butcherson. There are lots of screencaps of Billy from the movie.
There is also a page about the making of the Billy Butcherson character:
The Creation of Billy Butcherson
And check the trivia page for a couple of tidbits about his role in Hocus Pocus, as well as his other films.