You have some very solid positive aspects of your shot! Great work!
A few things worth considering are:
Are your arrows all the same length? If they are your draw length has some fluctuation.
Two things, I would advise doing.
1. Work with a formaster (you can make one if you can sew). This will help with any creeping/collapsing.
2. Work with a clicker for a little while. This will help with draw length inconsistancy.
I can't tell from the video completely, but I am assuming that you are not getting full rotation. Try to get the draw elbow at least behind the arrow (a little past would be even better). Also, try to bring the draw hand back to anchor, do not bring the face to the hand at all (noticable in 1st shot).
Oh, and don't try to do everything at once. Give it some time.
Hope that helps. Keep up the good work!