[Brian Pfleuger]

Those first 5 points listed by Frank are essential in any sort of accuracy task.

I always say "Practice makes habit." It doesn't make you "good" at anything, except what you're practicing doing. In other words, if you're doing something wrong, you're going to get REALLY GOOD at doing the WRONG thing. As a result, you might eventually progress to the point where you are very, very consistently mediocre. Somewhat amusingly, you might be convinced by this that you're actually "good", because compared to most folks, who are at best INCONSISTENTLY mediocre, you WILL be good.... Alas, you'll be the proverbial "Big Fish in a Small Pond."

If you want to genuinely be good, you need to practice the RIGHT skills, and Frank has the treatise on that, above.