You could resize them down to 9". That is much easier since it is a 25% reduction. Trying to get them down to 8" would be .33333333333........ I assume you don't have Electric Quilt. That is when things get so easy when you want to shrink or enlarge a quilt pattern. I just chose a dozen blocks from Marsha McCloskey's BLOCK PARTY. The blocks in her book were 9" and I put them into EQ and did 6" block. If you have a scanner, try to reduce something by 25% and see if that works. PM me if you need more help.