I think you're being too hard on yourself. I have ben quilting for a lot of years, and it took me about 5 minutes of loking at your (finished) picture before I saw your issue. I would say follow the others' suggestions, and finish the quilt. Small imperfections will not be noticeable once you get it quilted. And iif they do... it was planned that way. (That's my story, and I'm sticking to it, lol)