In The Traditional Bowyer's Bible, volume 4, Jack Hamm has a chapter on "Lessons From Target Archery".
One of the things that has stuck with me is a quote from his daughter-in-law, Mary:
"The key to being consistent, she advised, was performing the shot exactly the same way, every time. Holding the bow, drawing, anchoring, and releasing in a manner that allowed precise duplication was the key. Proper form had become "proper" because it was the easiest to repeat, shot after shot. .... The two most important aspects of form, as expected, were alignment and anchor. Other factors played a role, of course, such as stance, follow-through, and bow grip, but alignment and anchor were the most critical."
There is a lot more in the book, and I recommend that everyone read it.
You can do your own thing and shoot any way that you want. No one here will criticize you, but you will basically be re-inventing the wheel. Humans have been shooting bows for quite a while now. You can start over or build on what's been learned over the years. Find a coach that understands alignment and anchors. You will be years ahead on being able to shoot good. What many here won't like is that the best coach for this may be a target archer. Fortunately, most of them can adapt to more traditional equipment.
Allen