I've also been at it for about a year and have certainly made some helpful changes that have helped me become domre consistent, but I am very much still "working on it". Target panic has been the worst thing and remains the most prevalent reason for poor shooting. I have made much progress in the last month by changing to a deep hook and practicing in my garage at night at only 5 yards. I have gained a lot of control over my release by doing these two things.
Other than TP, the hardest thing for me is to concentrate and slow down so I don't shoot too fast. It seems that holding for a few seconds(2-4), allows me to get a solid anchor,steady my bow arm, acquire the sight picture, and release more smoothly.