I just discovered that my method of using Heat and Bond Lite will result in the mirror image of the pattern. While the final block being a mirror image of the original isn't a problem for me, it means that there could be issues when transferring a pattern to the background block with dressmaker's tracing paper. In fact, after looking more closely at all the blocks, there are blocks with rotational symmetry and blocks with reflective symmetry. Something to keep in mind when planning your blocks.