Ok all is not lost. Actually this can be a happy accident if you make lemonade out of it. How is that for globbing together a bunch of sayings?? What I would do at this point is to put a backing material onto the back and take a fabric I like that will be either bold if you like that or subtle and make 1.5 inch strips. Fold them in half right side out and sew 1/4 inch making a tube. Then I would take one tube and lay it onto one row of blocks lining up the raw edges and sew the 1/4 inch through the strip, the block, the batting and the backing all the way from one side of the quilt to the other. Then fold the strip over to cover the "seam" and onto the block opposite it. Sew it down making a "sashing" between all of the blocks. Do all of the seams vertically and horizontally. It will be beautiful and quilted too.