For you to take on a king size quilt AND FINISH IT, is a huge accomplishment. You should be very pleased with yourself. Every quilt you make is a learning experience. You will learn new techniques, new patterns, new color combinations, new friends. Embrace all of it. One thing you will also learn is how hard quilters can be on themselves - you will always be your worst critic. We try to say that we don't make mistakes, we just have some odd design elements! You will also discover that if you don't point out the 'error', most people will not notice it. Unless you are submitting it to be judged, don't stress over small things. Enjoy the process and keep on quiltin'.