making chalkboard thought bubble photo prop

I purchased a black foam board, a spray can of Krylon chalkboard paint, and two wooden candle cups to use as handles.  I free-hand drew what I wanted on the foam board.  used a razor knife to cut it out.  sanded the edges with sand paper.  applied four coats of chalkboard paint over two days.  then used tacky glue to glue on the handles.  I thought they came out pretty well.