Kirupa's Coloring Book Tutorial

Hy guys … I followed your tutorial on the coloring book … Now the thing is I have to make something similar to that but with image fills instead of colors.
That way when the user hits an image button , the background of a certain movieclip changes .

I searched some tutorial son the web … but yours was the closest thing I could find…

Can anyone help? Give an idea on hoe to do this or give me some link?

Thanks a lot!