I have also 'multi-sashed' my blocks--especially when there is a significant variation in sizes. In my sampler quilt, the block sizes were 8" and 9". I framed them in either red or black, to make them 11". I found the whole thing to be too busy if I just sewed the blocks to each other. So, I then framed each block with a narrow white strip to make them stand out, and then used the black to separate them. This also gave me the finished quilt size that I wanted, and in this case, 'calmed' the top.
I used Prism's method to make sure everything lined up. My usual method is cornerstones--from the same fabric or from contrasting fabric. This is a monster and I don't think I will ever tackle anything this big again.
Last edited by GingerK; 10-24-2017 at 05:01 AM.
Reason: add more info