Precisely! Make your barn really small and groups will tighten/individual arrows will nail the spot.
And then...... If one notices, at 10-15yds, that the arrow isn't going where one is pointing,, then it's a problem of tuning.
Tune first, just like tuning a musical instrument; and by tuning,, I mean even listening to the sound the bow, string, and arrow make. Learn about the many factors of arrow spine, arrow length, and point weight make on an arrow's performance. Look at the flight.
Then, when you're happy with the flight of the arrow,, go do everything everyone has said.
Here's a monumental point!: One can practice at putting an arrow, spot on, at a certain distance,, but that may only be where it is spot on, (the node), as is wiggles through space... and at half-an-arrow's length different, (the anti-node), the arrow can basically be going sideways.
Your arrows need to fly like a dart, from ~10/12 yds and beyond. If they wobble too much, you'll hit the animal,, but you'll hit it with the shaft,, and the most expensive broadhead in the world won't do a thing.
Keep the energy of an arrow moving as straight as a predator's/runner's focus.... and not like a person, wiggling down the street, trying to attract attention... (though, they do get their target that way!).
Critter,, Don't sell your bow. Get it set up properly, as far as brace height and nock height; and even those change an arrow's flight, with slight variance.
Those skins added weight and changed everything. I put "Bow Sock" on my limbs in the early /70's... Nice camo,, but.... And!... not needed!!!
Then,, have similar arrows, with different point weights to see what works best.
Then, know that you can stiffen a shaft, which is similar to reducing point weight, by slightly shortening the shaft length.
This is good technical advice. Telling you to just go shoot a poorly tuned bow and arrow is bad advice... and shooting a poorly tuned bow/arrow a lot is just frustrating.
Find someone who really knows how to tune equipment and they can help you in a very short period of time.... And then go shoot at all ranges, one arrow at a time... stump/cone/flower shooting.. it's the best hunting practice,, but only if your gear is working.
Good shooting!.... Ken