I have made a pinwheel quilt like yours without the chicks and it was fantastic. Made with 30's reproduction fabrics for my first great-niece. Here's the link to that quilt which explains very clearly how to do prairie points. It was my first try and it was very easy. TIP: I used Elmer's Glue, using a fine tip applicator, and lightly glued the prairie points since they overlap. The glue keeps them in place as you sew. The finished product was very professional looking and added some bling to my quilt.
http://www.modabakeshop.com/2009/03/...aby-quilt.html