Two years ago I got a second place ribbon at the fair and the comment card read "Lovely quilt, but wavy binding". I took that quilt (lg. wall hanging actually) to our quilt club meeting and the whole class looked my project over and could not SEE what the judge was talking about. It was a disappointment, but so be it. It didn't stop me from entering quilts at our fair and having fun making them.
I no longer cut 2" bindings. It's just toooo close for my old eyeballs. I cut them 2 1/4"...and make sure I am NEVER in a hurry. I want the binding on flat (and not pulled taught) which can cause a "wonk-wave" down the binding edge of your quilt.
I recently saw tutorial (can't remember where) where the quilter used water soluble glue to pre-glue her binding down. I may try that on a wall hanging, but not a full sized quilt. I have to admit her mitered corners were CRISP and spot on.