This is G-6: Papa's Star. It's famous as being notoriously difficult to sew. I used paper piecing and yes that star in the middle is tiny! And, keep that pentagon in the center in the correct orientation. I found out in doing my first one that all sides of the pentagon are NOT the same. Remember the whole block finishes at 4.5 inches square.
You can follow me on Facebook at http://www.facebook.com/pages/Viridian61/347674418583948