IMHO it's good, identical, repeatable form, release, and followthrough. Not to mention well tuned equipment and matched arrows. Assuming your gear is a go I'd also recommend video taping yourself - watch what you do, how you do it, what you do differently, time your shooting - how long it takes to draw, anchor, aim, release - does it vary? Is your anchor consistant? What is your breathing pattern?

Also - I'd say aim harder - don't let it zip when it drifts by the X, BURN it in the X before easing it off.

Finally - lots and LOTS of arrows. During the height of spot or 3D season it's not uncommon for some to shoot over 100 arrows a day.

My $0.02





Aim small miss small