ah the joys of barebow. Aim. you will never be consistant with instictive. I stringwalk and facewalk because i will NOT come down lower than the split in the tab. over 70 meters is platform tab under my chin. under 70 but over 30 is spig tab from my lip and 30 and under is to my cheek. As far as i can, i look down the arrow but if it is under my chin, i can't do that so it is a matter of getting the string directly down the cut out of the riser. a lot of it is trial and error but it is possible to get the arrow point on the target somewhere (not always on the gold). at 100 yds my index finger is straight along the arrow, the arrow tip is 8 oclock blue and so on for all the distances.
As for elbow, that is a case of getting your form right. Unfortunately, a lot of people think barebow is easy but there are a lot of variables. Longbows are allowed a sight mark on the floor,
recurve have sights and clickers and
compound, well, compounds have everything but a tank engine but barebow is exactly that. until a few years ago, we weren't allowed wrap around arrow rests or marks on the tab (until the powers that be realised that blackwidow tabs had stitching on that archers were counting) and we had to shoot
recurve scores if we wanted classifications. we've still got to shoot recurve scores if you want FITA star awards. the only thing that barebow has is it's a lot of fun and a damn sight more skillful that a lot of archers think.
Welcome to the barebow club. good luck and enjoy