you don't give specifics on how much bigger you want blocks and quilt--if you double the size of the 6" blocks (all pcs.) it would give you a 12" block--and double the quilt size. without having to add any blocks. If you made them into 9" blocks and added 1/3 the measurement of the pieces( for example a 1" sq. would be 1 1/3" ), it would increase the quilt size by 1/3 without adding blocks.