Despite it being a mystery quilt, the instructor could and probably should have informed you that your favorite fabric would not be the dominant color/fabric design. It's too bad because, as someone once said, it left a bad taste in my mouth, and so did that quilt. No guilt, if you don't like it you don't like it. I have made some "Ugly" quilts for David's House, my guild's number one charity, it's like a Ronald McDonald house where family stays while children are in the hospital right next door. I had been given some ugly fabric, but decided to make a quilt anyway. I finally said enough, it was only a small baby quilt, but I figured someone might like it. A month or so later, a picture appears with a baby holding the blanket, so someone loved it. Finish it or not, it's your quilt to do with as you please. Keep on quilting.