I have enjoyed your 'journey' with this OBW. Thank you so much for sharing with us so many times along the way. You have done some lovely transitions along the way. The quilt you finally decided on is beautiful, everything just flows together so nicely. As for the 'error'. If it bothers you, take the time to change it because it will always bother you. If you can see it as a design change, leave it and bask in all the accolades you are receiving. It seems like this is one of those successful skill building pieces that encourage you to press on.