A little walk through of how to sew the roof... i knew you'd want one! The pattern has ALL the sizes and Directions, so follow in the pattern for that (you get it here) In order to avoid flipping a triangle around the wrong way, lay the block out next to the machine as you sew Sew one side Press, this is important. If you don't press, you block is not flat so you create issues when you sew on the next triangle. Did you ever sew on that next triangle and find you were not on the straight and...