In answer to Amy's question

 I use a firm high quality felt in a neutral color or a color that blends...I use felt that is readily available at fabric or craft stores.. I find bags of it at thrift stores after the holidays...  Most any felt will work but you don't want something cheap that will pill or too stiff as some squares are....  All the directions are on my tutorial. http://olderrose.blogspot.com/p/bird-on-felt-tutorial.html