http://www.quiltmaker.com/articles/Box_Kite?bc=c
you can figure it out just from the photos here. Shows the block and the whole quilt.
The squares are 2.5 unfinished, 2" finished. I found using these FREE printed papers ( like the thangle method) a great help as you can make 18 half square triangles at a time and no tiny fabric pieces.
http://www.quiltingandwhatnot.ca/Hal...-Triangle.html
Be sure when printing them, you turn off the "fit to paper size" option on the printer. And measure the square in the corner to be sure it is printing the proper size.