Billy Goat
WKR
Draw length
It really doesn't look bad, your head might be cocked back a little. Definitely looks like your throwing your head down. Hard to tell with a sweatshirt on exactly what your arm angles are.
Shortening your loop is going to mess you up pretty good, I definitely wouldn't do that. Using a nose button shortening your loop is going to change your hand position or your nose.
Might be your head leaning over is causing your arm to bind. Can you get a picture from straight behind with a little elevation? I'm also not great at looking at pictures of people shooting, take my evaluation of it for what you are paying for it.