Online, though, I'm hearing quite a bit of concern over the 48 pieces within a 6" block. Taking a look at the pattern, I quickly realized there was a faster, surer way to piece these blocks (1-4" heart and 5-2" hearts) to avoid bulky seams, shifting points, and shrinking sections. Cut the fabric as instructed but follow these steps in this order.
Step 1: Sew two smaller squares to the corners as laid out below. Trim just the excess background fabric before pressing.
Step 2: Press the light background fabrics below. Notice that the light fabric, in this example, was just a bit smaller than the red fabric. That's OK. You will use the red fabric to align your pieces before joining and the light fabric will catch within the seam.
Step 3: Sew the two red pieces together along the length. Notice how beautifully the point matches.
Step 4: Press open.
Step 5: Sew the remaining two small squares to each corner using the picture as your guide.
Step 6: Trim the excess light background fabric.
Step 7: And press. If you trim, use the red fabric as your guide.
Step 8: Using the method demonstrated with the smaller squares, sew your first large square to the lower corner. Don't forget to trim the excess light background fabric before pressing.
Step 9: Sew your last large square to the remaining corner. Again, remember to trim the excess light background fabric before pressing open.
Here's an image of the back. As you can see from the ruler underneath, the block is a perfect 4 1/2" square. There is no excess fabric sewn into the central seam shifting your points and the two upper and one lower point is exactly 1/4" from the edge.
Repeat the process for the 5 smaller hearts.
With such small pieces, I'm really finding Mary Ellen's Best Press a fabulous way to finish these blocks.