I have recently been getting into fixing, setting up, ect. my guitars for fun and to save money. I've been reading some of Dan Erlewine's books and came to the conclusion that the frets needed to be leveled. Keep in mind I'm not practicing on my nice guitars, just some old cheapies. Anyway, I got some fret files and the necessary tools to complete a dressing. I finished about an hour ago. I really enjoy working on guitars (even though I just started). I'm not expecting my first fret dressing to be that great, but what are some ways to tell if I did a good job or bad?