To tackle a king sized quilt shows you are tenacious, fearless and confident! I made my first quilt in 1976 and it was such a disaster that I didn't try again until around 1995 when I decided to take a beginner quilting class. That class answered more questions and gave me better skills than any book or internet site.
If you really don't like the quilt just fold it up and shove it in the back of the closet. Don't take it out until you've made four more quilts. You'll be glad you saved it. I still have the 1976 quilt and reminds me of how far I've come in my quilting skills.