Shooting high could mean that you are nocking your arrow too low on the string and you may fix it by raising your nock point. Arrows striking to the left might mean that your arrows are spined too stiff. You can add a heavier point and see if that moves your group closer to center. I saw a chart and a good explanation of trad bow tuning on OL Adcock’s site a couple of years ago. I don’t know if it is still up or not. I cant my bow slightly and that seems to help with my right/left accuracy a great deal. Good luck with it and welcome to real archery. Stay with it, if you shoot enough arrows it will all come together. 😉