When they are sewn together, you place the 60 degree line of your ruler on the stichline and make sure that you have 2.5 inches on top going to the right and the 60 degree line should be 4.5 inches down where it meets the stiching. (You forget about the squarness of the block. That's why they are so large in the first place. There has to be enough material for you to cut the 2.5x4.5, with the 60 degree angle on the stitching line. Then you turn it around and do the same thing again. It looks to me that's what you did. Just make sure you line it up perfectly and you are good to go. Happy quilting!