From what I see, your drawing arm upper arm needs to be straight in line with the arrow, based on the 2nd picture it appears that your drawing arm elbow is pointing more at an angle to the arrow. Second, are you anchoring on a hard tissue anchor, 1st pic makes it look like you are anchoring on or slightly under your jaw line. This is very low compared to the typical which is anchoring with middle finger in the corner of the mouth and pulling with tension in your back as if someone has a string tied to your elbow and is pulling straight away from the arrow. I would suggest finding out your correct draw length. If you are long-armed you need to have a bow that will accomodate your long correct draw length. Watch moebow's form videos on YouTube for more tips and pointers.
Best of luck, I am sure you will receive many good tips to follow. This IS the trad campfire spot ya know! And many people will bend over backwards to help you out.
TomBow