Your quilt is very pretty and deserves to be finished and enjoyed. There is a real economic loss to UFO's that just get stuck in the closet. By taking the class after you started the quilt invited self-criticism. I learn new things with every class, video or from friends. But it is important to finish things, learn from them and move forward. To stop and not finish does not necessarily guarantee a perfect outcome on the next project. Moving through the challenges is a great teacher. Keep going!