How do I preserve these blocks and make a top from them?
Perhaps I wasn't clear in my original post that got moved to the pictures forum. My sister found these beautifully appliqued butterfly blocks at an estate sale. They are truly 1930s butterfly blocks in feedsack fabric on muslin that feels "crispy" and may not be stable. Additionally, some of the appliques are close to the edge of the backing fabric and the blocks are not a consistent size. How do I stabilize them and trim down to a consistent size to make a top?[ATTACH=CONFIG]542005[/ATTACH]