I think all quilters think their work isn't good enough. That's probably why we make so many quilts. Practice makes perfect. I thought I really wasn't that good until I had just washed a couple of my quilts and was hanging them on the line and my neighbor came over and couldn't stop complimenting me. She hadn't seen any of my quilts in a while and she said how much I had improved. Sometimes we just don't see our own progress. Keep quilting and pretty soon you'll realize your getting good at it