Well practice and the amount you put into it is going to be such an individual thing! The one thing that helped me most was when I was at the AQS show in Nashville a few years back. I attended a seminar given by Caryl Bryer Fallert, a well known, fabulous quilter. Given the opportunity to see her quilts and actually touch them allowed me to see that my quilting, while not at her level, is just fine! Since then, I find that I am so much more relaxed that I actually do better. Unless you are entering your quilt where it will be judged by others, don't be so picky. None of us are perfect!