Tell us a bit more about the kind of terrain you are hunting or shooting in. Sticks are good, but there is a reason you don't see them here often. If they were practical they would be part of kit.
Without knowing anything else, Id say the best thing you can do, is get in the habit of looking for a rest as the first thing you subconsciously do. A tree, fencepost, mound of dirt, daypack.
Don't try to shoot off hand too far. 50 to 60 meters on a deer size animal at most. Less than 20 on a rabbit or possum.
shoot as much as you can and just practice the basics of good form, breathing and trigger control.
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