It has been a while since I posted on this part of the forum. I have been around but mostly reading. It has been interesting to see the way Tradgang has changed over the years. There are a whole new group of "experts' (no disrespect intended) than when this thing first started. I thought I would chime in with a couple things that have helped me out to getting shooting good enough to hunt.
3D shoots are a lot of fun and good practice. I shoot 3D a couple times a year but hardly ever keep score. I rarely shoot from the appointed stakes and I usually choose to shoot around or over something that simulates a hunting situation safely at distances that are within my limitations. The folks I usually shoot with do the same. Try shooting from your knees, twisting around in an awkward position, with your back up against a tree, through some weeds or a vine tangle. That is what you will run into in the deer woods.
I regularly shoot at 30-35 yards. Mainly because the longer distance will reveal your form flaws. I pay attention to the arrow flight and how my form effected it. At times you need to shoot outside of your comfort zone. You will see how a bad release will effect your arrow flight.
I also spend time shooting at close distance like 5 yards or less. I need to do this because I tend to shoot high when I get that close of a shot. I hunt deer in standing corn and a shot at mere feet is common.
One more. If you are having form problems or a little target panic try this. At a safe distance while shooting alone or with spotters, focus on your target, draw and anchor, then close your eyes and dont open them till you hear your arrow hit. Pay attention to where your bow arm and release hand are and what happened with that shot. This will tell you what you need to know about your form and help to eliminate panic if you are dealing with it.
Sorry for the long post. Hope this might help a few out there.