it is only a failure if you do the same the next time Take some time and think back on what you did which caused the blocks to not be "correct". Was it in the cutting, the piecing or pressing. If you don't know what went wrong you don't know what to correct. Did you sew too fast. Did you pin to make them meet because the machine can work against you..........Go back and then "confess" what you did that made them the way they are. Practice only makes more perfect if you correct what was not perfect the first time. We will be waiting for your answer. lol