Iam not close to being and expert on judging yardage. But somethings that have helped me improve are going to the range without my bow. I just take my rangefinder. I wright down what the target is and if is up hill or down hill or whatever. Then I wright down what I judged it for. Then I imagine that I am in a high pressure situation and this target is the last target of a shoot off for some big shoot somewhere. Then I go through my shot sequence and concentrate on shooting this one shot with perfect form. If you practice this enough you will actualy see the arrow hit the spot you are concetrating on. Then I range the target and wright it down. When Iam done I add up how much I was off on my yardage. If I was a total of 25 yds on 20 targets I score it as 175 . By doing this I know if I need to work on my up hill or down hill judging and I know what targets I mis judge the most. But the most important thing is I put myself in high pressure situations and that helps with tournment nerves. I probably look a little stupid out their on the range shooting without a bow but if it improves my scores thats all that matters to me. I think one of the biggest mistakes people make is shooting in their backyard or wherever at a target at a known distance. This does not help you on the 3d range it only gets your sights set. Once you get your form down and you know what it feels like to shoot perfect form. Its time to put your bow down and work on yardage. I have found that shooting at a blank bale at 5 or 10 yards with my eyes closed so I can concentrate on the feel of the shot for about 20 or 30 minutes every other day helps me alot. I spend more time judging than I do shooting about the last week or two before a tournment. Knowing the feel of a good shot and being good at yardage will give you the skills and the confidence to do well at the tournments. GOOD LUCK!