What mistakes. I am looking at it as a whole and loving what I see. You are right to a point on the quilting hiding any errors. If your longarmer freemotions and sees an unmatched area, she can stitch through that intersection, pushing it down and in effect hiding it. But no one will be looking for anything anyway. They will be so mesmerized by the overall beauty. Anyone looking purposely for unmatched areas is a bittywitch and should get a life.