I'm sorry I don't know you but what I see is Your Definitely in to shooting. So take a turn out each limb......you may know this so know I'm just trying to help. You should have a weight that you should not have to sky pull..aiming up and drawing as you lower...UNLESS you don't want to go any lower....if that's the case. Just practise maintaining your form for properly drawing back. Practice practice practice.. You'll get the muscles. Back muscles. You can even find a workout for working those very muscle for drawing. Also if I've offended its not my intent...feel free to tell me piss off. Your learning maybe on everything archery....that's more then 1/3 of people who watch these type videos....alot just don't wanna do their own maintenance etc.....your here doing it so don't lose focus.....you have a good coach with you it sounds like!