I am thinking about making a quilt for Miami County with all the blocks on barns in Miami County, OH. My problem is...All of the patterns I have found are not the same size. I would like to make them all 8" blocks, there will be 63 blocks. HOW do I reduce/enlarge a block pattern? Math has always been my weekness. I have found a few resources on the net that says reduce 67% or enlarge 78%, but what am I reducing. Do I have to put each individual piece in to get the correct size? I don't know, this is driving me crazy.