I've always approached practice with the thought in mind to hit the smallest target possible. I routinely use small dots on paper at 15 and 25 yards and I try to hit that small target every time. I find that when I switch to larger targets, it is easier to hit whatever I want to.
I do miss occasionally, but I don't miss by much.
" Of every One-Hundred men, Ten shouldn't even be there, Eighty are nothing but targets, Nine are real fighters... We are lucky to have them...They make the battle. Ah, but the One, One of them is a Warrior... and He will bring the others back."
- Heraclitus (circa 500 BC)