I love this pattern. I use it for lots of different things. The basic square with the heart is on ask.com. The square size is determined by the length of the heart. The bottom triangles are 1/5 squares that are 1/2 the length of the heart. The top triangles are 1/4th the length of the hearts. So a 6.5" square will have a 3.5" bottom square and a 2" top squares and 3.5 X 6.5 rectangle. For an 8.5" heart square you would use a 4.5 X 8.5 rectangles, 4.5 " squares for the bottom and 2.5" squares for the top. Hope this helps.