The Carpenters Star by Debby Maddy requires 8 fat quarters for your focus fabrics and another 2 3/4 yds of a background fabric. This is for a 90" x 102" quilt. Additional yardage is needed for three borders and an outside border. With her pattern you cut 4 - 8 3/8" squares from each fat quarter for a total of 32 squares. From your background you would need to cut the same amount, but you also need some background squares to complete the top as well..If you use layer cake for your focus fabric, you would need 32 10" layer cakes subcut into 8 3/8" squares to make it work...Please check out her pattern..it is really easier than you think..she has a separate pattern or a book titled Simple Stars Beautiful Quilts...There are no "Y" seams..Good Luck and please post a photo for us to see..