Here's a crazy quilt heart block featuring one of my favorite postcards from my personal collection. It's V113 from my Vintage Postcard CD.
Download the PDF file. Print the heart block directly onto computer printer fabric with your inkjet printer, then use it as the foundation for your crazy quilt heart block with the center image already in place. When printing this heart block, use the "Actual Size" in your printer's settings for an 8" finished heart block.
To use this foundation pattern, align the edge of the wrong side of your fabric with the dotted line and sew on the straight line. Flip the fabric over the press toward the dotted line.
Stitch two pieces of fabric together (2-1, 2-2 and 3-1, 3-2 and 4-1, 4-2). Treat as one piece of fabric for 2, 3 and 4. Stitch three pieces of fabric together (5-1, 5-2 then add 5-3). Treat as one piece of fabric for 5.