I made this coaster/trivet thing for a Harry Potter swap. The original intention was to paint the image. That was before I remembered that I don't paint because my hands shake too much to paint a straight line! (I wish I was kidding.) Instead, I decided to adapt a paper-piecing technique my mom used for visual aids in her classroom.
What I Used
Potter Puff graphic (nicked from Potter Puffs)
various colors of cardstock
plain white tile from home improvement center
satin varnish/decoupage medium
What I Did
1) Opened graphic in paint program. Removed all but thick, black outlines.
2) Determined needed colors; loaded appropriate colors of paper into printer.
3) Printed line graphic onto each color needed.
4) Cut out appropriate section of each color (hair, eyes, clothing)
5) Ran cut-out pieces through sticker-maker.
6) CAREFULLY assemble pieces on tile, sticker side down. (It's like a puzzle, man!)
7) Apply multiple coats of varnish to make sure paper stays stuck.
Hope the above makes *some* sense -- let me know if any clarification is needed!