cant really add to whats already been said, but time on the ramge on paper and getting to know your rifle & scope is paramount.
Practice on paper in 5 yard increments until you can consistently hit within a 1" circle, then know your limits, theres no shame in only hunting out to 30-35yds, tbh it takes skill to get that close unless the quarry is daft and people friendly
Dont stop posting though mate we love to hear about the new guys and how they get on
Darryl