I have two adult sons. Here is my honest opinion. If your son is a perfectionist, as you stated, he will want you to "straighten it out". I am afraid if you don't, the quilt will end up on a closet shelf. He will be embarrassed by his work even though he was young when he worked on it. Mom may see it is a cute but he will see it as a failure. It is still his work since he picked out the pattern and the colors. I suggest you straighten it out and finish it.