It looks fine to me. You will have to point out the unmatched points. I will show my DIL. She can find an unmatched point in a 120x120 quilt. Yes, she is a perfectionist and her projects always look wonderful. I got her started but she has far exceeded my skills and so have you. Don't be so hard on yourself. My thoughts are if you can see the mistake with the quilt hanging on the porch riding by on a galloping horse, you need to rip it out.